Friday, October 25, 2019
Whites v. Slaves :: American America History
Whites v. Slaves Throughout the nineteenth century, the relationship between Africans and White settlers had never been exactly pleasant, most Africans were slaves who were usually treated badly and therefore never did respect their white owners. However, over time, these slaves began to revolutionize their culture, language, and points of view based on their environment. Many changes were occurring in this period of time, thus creating countless opportunities for the African Americans to fabricate their new culture. A catalyst to this development of the new society is the noted differences the Africans and whites possess. Many of the Africans despised the whites, so they tired to stay as far away from them as possible, this rift in the peoples created the main African culture, purely based on the opposite ideas that the whites held. On the other hand, many times the White people would help out the Africans, and a bond would form between the slaves and their master. Although the groups tried to remain different in this situation, the ideas between the two mingled together and they influenced each other. As horrific as slavery may have seemed at the time, I think it may have been a "positive good", simply due to the actuality that at this time, White people were exceedingly ignorant, and without slavery, they possibly would not have a way of dealing with interactions with the slaves. As we look to post-Civil wartime, up to the time of MLK, we see that ignorance was an infestation throughout all of us, without the slavery, Africans were treated with the utmost disrespect. Common rights were stripped from them, and at times they were reduced to being treated like animals. During the period in question, the two races grew into coexisting without any major conflict or altercation. Comparatively to the north, the slave southern states did not seem to treat its workers any worse. It was said that at the time, the slaves were achieving better shelter, food and clothing. The migrant workers in the north at many times worked similar 10-14 hour shifts, and at many times, the slaved did not work that many hours, depending on what type of system they were working. Plus the workers up north did not have much food to eat, or clothes to wear, something the slaves did enjoy. Whites v. Slaves :: American America History Whites v. Slaves Throughout the nineteenth century, the relationship between Africans and White settlers had never been exactly pleasant, most Africans were slaves who were usually treated badly and therefore never did respect their white owners. However, over time, these slaves began to revolutionize their culture, language, and points of view based on their environment. Many changes were occurring in this period of time, thus creating countless opportunities for the African Americans to fabricate their new culture. A catalyst to this development of the new society is the noted differences the Africans and whites possess. Many of the Africans despised the whites, so they tired to stay as far away from them as possible, this rift in the peoples created the main African culture, purely based on the opposite ideas that the whites held. On the other hand, many times the White people would help out the Africans, and a bond would form between the slaves and their master. Although the groups tried to remain different in this situation, the ideas between the two mingled together and they influenced each other. As horrific as slavery may have seemed at the time, I think it may have been a "positive good", simply due to the actuality that at this time, White people were exceedingly ignorant, and without slavery, they possibly would not have a way of dealing with interactions with the slaves. As we look to post-Civil wartime, up to the time of MLK, we see that ignorance was an infestation throughout all of us, without the slavery, Africans were treated with the utmost disrespect. Common rights were stripped from them, and at times they were reduced to being treated like animals. During the period in question, the two races grew into coexisting without any major conflict or altercation. Comparatively to the north, the slave southern states did not seem to treat its workers any worse. It was said that at the time, the slaves were achieving better shelter, food and clothing. The migrant workers in the north at many times worked similar 10-14 hour shifts, and at many times, the slaved did not work that many hours, depending on what type of system they were working. Plus the workers up north did not have much food to eat, or clothes to wear, something the slaves did enjoy.
Thursday, October 24, 2019
Strategies to Discourage Social Loafing
Strategies to discourage social loafing: Social loafing can be described as a tendency of individuals to exert less effort when they are part of a group. Since, all individuals are sharing their efforts to accomplish set goals; each member of the group contributes less than he/she would if he/she was individually accountable. One of the major reasons behind this behavior is that individuals think that they are not being acknowledged for their efforts. Such believing brings their moral down and therefore team members see no reason to reach high-level performance while working within the team. This behavior also develops when individual responsibilities within a team are not well-defined, or when management cannot track performance with precision. To correct and eliminate social loafing within the team players and to provide positive advantage to organization, the following steps can be taken. By defining clear roles and responsibilities to each team member in the beginning of the project will help each individual to achieve set goals and objectives. – By observing each individual’s contribution closely. -Set up individual assignments that reflect results toward the end project. -Assign individual tasks according to his/her skill set and strengths. This approach will promote the individual to accomplish assigned tasks in an effective manner. -Employ team reviews and member evaluations on regular basis. Simplify the rol es and responsibilities for the team to follow. -Support and persuade team members with loyalty. -Provide timely feedback to each team member on assigned tasks. -Using the management by walking around method can also reduce the social loafing within the team individuals. This practice will help management obtaining a better understanding of the work being done outside as well as building relationship with employees. Similarly, team members will learn that management is coming around anytime that will reduce the possible chances of social loafing.
Wednesday, October 23, 2019
Difference of Othello’s Behaviour in Act One and Act Two
English Literature – Othello How is Othello’s behaviour in Act Two different from his behaviour in Act One? How do you account for this change? What consequences do you think it will have? In Act One, Othello appeared to be in control of his emotions. When Brabantio confronts Othello, accusing him of stealing and raping his daughter Desdemona by means of witchcraft, Othello is calm and tells his men to stop the fighting.Although he is being accused of kidnapping and raping Desdemona, in which the person who commits the crime would be burnt to death, Othello shows that he is unafraid of danger, ready to risk everything for the woman he loves, and is able to command others despite facing the serious accusation. He is ready to face justice, and convince the Duke of Venice that he has done nothing wrong. This shows that he is brave and confident. When he speaks to the Duke, he speaks in a respectful manner.He also promises not to be distracted by Desdemona if he is allowed to bring her together to Cyprus. His manner and promise appears to us that he is a serious, sensible and rational person. However, he behaved differently in Act Two, when he arrives in Cyprus. His behaviour is sloppy. For example, he tells the people in Cyprus that, to celebrate the defeat of the Turkish fleet, they can ‘dance’, ‘make bonfires’, and ‘sport’, i. e. to have sex. He tells the people to have party time, giving license for people to behave as they like to.Unlike the serious person he appears to be in Act One, Othello seems to be overjoyed to meet his wife Desdemona in Cyprus safely and the defeat of the Turkish fleet, becoming irrational and insensitive to the people’s fear of another attack. When he comes ashore, meeting his wife, he is overjoyed, forgetting to announce the defeat of the Turkish fleet. He greets his wife, saying ‘O my fair warrior’, and kisses her several times. It appears that he has completely forgotten his promise, not to be distracted by Desdemona, to the Duke.Cassio and Iago, on another hand, have repeatedly refers to Desdemona as ‘general’s general’, and that she is ‘in charge’. This tells us that Othello is clearly distracted by his wife, preventing him from performing his duties, as observed by his lieutenant and ancient. In Act Two Scene Three, Othello admits he is not acting rationally and not performing his best. He says, â€Å"Now by heaven, my blood begins my safer guides to rule, and passion, having my best judgment collied, assays to lead the way. This tells us that Othello himself is conscious of what he is doing. He admits to acting irrationally, following his passion to rule. This shows that he is distracted by Desdemona, because only their love and marriage would lead to Othello’s overflow of passion. This may also show that Othello follows his heart, will and passion to act and rule. When Othello finds Cassio and Montano fighting, he asks Iago what has happened without confirming with others. He does not investigate thoroughly, as Iago has hidden some of the truth.He immediately takes Cassio off his office. This can be considered as an impulsive judgment. His change of behaviour in Act Two is due to the distraction from his wife Desdemona. Because of his newly-wedded wife presence, Othello is distracted and unable to perform his duties. He is led by his passion, which is affecting him because of his sexual interest in Desdemona and his joy to be reunited with her after the rough journey on the sea. Being away from Venice may also account for his change of behaviour.Since Othello remains below the Duke and Senators in Venice, he demonstrates respectful and brave manner, so that even the Duke calls him ‘valiant Othello’. However, in Cyprus, Othello becomes the person-in-command in the whole of Cyprus. The sudden swell in his authority and power may have contributed to his irratio nal judgments and actions. In Cyprus, Othello no longer has to act in the way he has promised the Duke. He can betray the Duke’s trust, because no one in Cyprus has the power or authority to stop him, or report him to the Duke back in Venice.He reveals his sloppy behaviour, and is clearly distracted by Desdemona’s presence, preventing him from acting rationally. With Othello’s change in behaviour, it may be easier for Iago to manipulate Othello and to carry out his plan to destroy Othello’s reputation. In Act Two, Othello reveals that he follows his passion to rule, and makes impulsive judgments without investigating thoroughly. Iago observes this, and therefore use Othello’s weakness to carry out his plan by telling Othello that Desdemona has been unfaithful.Since Iago knows that Othello will not investigate thoroughly if he tells him that Desdemona has been sleeping with Cassio, it will increase Iago’s success in destroying Othello’ s reputation. Other people can use Desdemona as a means to get what they want from Othello, as she has a great influence on her husband. For example, Cassio, after losing his job, hires a band to serenade Desdemona. Cassio tries to appeal to Desdemona, so that she may help him persuade Othello to give Cassio back his job.This may result in a corrupted government, with people using tactics to win Desdemona’s favour, instead of getting the job using their own talents or strength. Lastly, since Othello acts according to his passion, Iago can, by manipulating Othello, remove those who are against him, or whose who disrespects and insults him, like Cassio who calls him ‘Honest Iago’. This will result in lack of talents and observant people in Othello’s government, because all those who are against or disrespectful to Iago can be easily removed by Iago. Therefore, Othello’s government will become corrupted.
Tuesday, October 22, 2019
List of the 29 Governorates in Egypt
List of the 29 Governorates in Egypt Egypt, officially called the Arab Republic of Egypt, is a republic located in northern Africa. It shares borders with Gaza Strip, Israel, Libya, and Sudan and its boundaries also include the Sinai Peninsula. Egypt has coastlines on the Mediterranean and Red Sea and it has a total area of 386,662 square miles (1,001,450 sq km). Egypt has a population of 80,471,869 (July 2010 estimate) and its capital and largest city is Cairo. In terms of local administration, Egypt is divided into 29 governorates that are administered by a local governor. Some of Egypts governorates are very densely populated, like Cairo, while others have small populations and large areas like New Valley or South Sinai. The 29 Governorates The following is a list of Egypts 29 governorates arranged in terms of their area. For reference, capital cities have also been included.1) New ValleyArea: 145,369 square miles (376,505 sq km)Capital: Kharga2) MatruhArea: 81,897 square miles (212,112 sq km)Capital: Marsa Matruh3) Red SeaArea: 78,643 square miles (203,685 sq km)Capital: Hurghada4) GizaArea: 32,878 square miles (85,153 sq km)Capital: Giza5) South SinaiArea: 12,795 square miles (33,140 sq km)Capital: el-Tor6) North SinaiArea: 10,646 square miles (27,574 sq km)Capital: Arish7) SuezArea: 6,888 square miles (17,840 sq km)Capital: Suez8) BeheiraArea: 3,520 square miles (9,118 sq km)Capital: Damanhur9) HelwanArea: 2,895 square miles (7,500 sq km)Capital: Helwan10) SharqiaArea: 1,614 square miles (4,180 sq km)Capital: Zagazig11) DakahliaArea: 1,340 square miles (3,471 sq km)Capital: Mansura12) Kafr el-SheikhArea: 1,327 square miles (3,437 sq km)Capital: Kafr el-Sheikh13) AlexandriaArea: 1,034 square miles (2,679 sq km)Capital : Alexandra14) MonufiaArea: 982 square miles (2,544 sq km)Capital: Shibin el-Kom15) MinyaArea: 873 square miles (2,262 sq km)Capital: Minya16) GharbiaArea: 750 square miles (1,942 sq km)Capital: Tanta17) FaiyumArea: 705 square miles (1,827 sq km)Capital: Faiym18) QenaArea: 693 square miles (1,796 sq km)Capital: Qena19) AsyutArea: 599 square miles (1,553 sq km)Capital: Asyut20) SohagArea: 597 square miles (1,547 sq km)Capital: Sohag21) IsmailiaArea: 557 square miles (1,442 sq km)Capital: Ismailia22) Beni SuefArea: 510 square miles (1,322 sq km)Capital: Beni Suef23) QalyubiaArea: 386 square miles (1,001 sq km)Capital: Banha24) AswanArea: 262 square miles (679 sq km)Capital: Aswan25) DamiettaArea: 227 square miles (589 sq km)Capital: Damietta26) CairoArea: 175 square miles (453 sq km)Capital: Cairo27) Port SaidArea: 28 square miles (72 sq km)Capital: Port Said28) LuxorArea: 21 square miles (55 sq km)Capital: Luxor29) 6th of OctoberArea: UnknownCapital: 6th of October City
Monday, October 21, 2019
Compartment syndrome Essays
Compartment syndrome Essays Compartment syndrome Essay Compartment syndrome Essay     COMPARTMENT SYNDROME    Page 1     Compartment syndrome is a condition that occurs when the pressure in an anatomical compartment increases due to swelling which can cause damage to the muscles and the nerves. As the pressure increases, it cuts off circulation and starves the muscle and nerve cells. This can cause temporary or even permanent damage and as a result, the affected area can develop paralysis. In severe cases, amputation of the limb may be required or the end result could be death.     Compartment syndrome is classified in two different forms. It can be chronic compartment syndrome which is a common ailment among athletes due to exercise and physical activity. The other form is acute compartment syndrome that is a medical emergency, generally trauma induced, where time is of the essence.     Compartment syndrome most commonly affects the lower leg and forearm, although it can occur in the foot, thigh, hand and upper arm.     The first case of chronic compartment syndrome of the leg was diagnosed by Mavor in 1956. Over the next twenty years, only nine other cases were of chronic compartment syndrome were reported. But as physical fitness became more of a trend and grew in popularity, chronic compartment syndrome became a more significant problem.     Chronic compartment syndrome generally occurs in the legs as a result of steady exercise or running. This can generate a constant pressure to the areas in the anterior or lateral compartments. Exertion can cause the muscles to swell and expand forcing pressure within the compartment. Most often this occurs in the lower leg and can usually be relieved with plenty of rest, applying ice and elevation of the affected area. Compression is not to be applied.                                                                          COMPARTMENT SYNDROME    Page 2     Pain and swelling are the primary symptoms in chronic compartment syndrome and it can last for weeks and even months. Diagnosing chronic compartment syndrome can be done by testing the pressure in the compartment with a handheld pressure catheter provided the condition exists within the anterior compartment. If the problem is deeper into the posterior compartment, it is more difficult to test because the area is harder to reach. Doctors measure the pressure before a person exercises, then one minute after exercise and finally five minutes after the exercise. If the pressure has not decreased, compartment syndrome is the likely diagnosis.     Thallium stress testing is another test used to detect chronic compartment syndrome. In this test, thallium is injected intravenously into the body as the patient undergoes various forms of exercise. By use of this form of testing, multiple compartments can be found to be affected as was proven in some cases. This test, however, does not indicate the extent of the condition.     In chronic compartment syndrome, the patient often feels a numbness or tingling when moving the affected area. This usually subsides once the movement ceases but the pressure inside the compartment has the potential to still remain high afterwards.     Treatment for chronic compartment syndrome rarely requires surgery. Doctors suggest rest and avoiding activity, especially anything strenuous or physical involving the affected limb. Ice and elevation are recommended and the patient is to take aspirin or ibuprofen to reduce the inflammation.     Should this type of treatment fail, a fasciotomy is recommended. Fasciotomy is a surgical procedure involving the fascia, or fibrous tissue that surrounds the muscle. The fascia is cut to relieve the pressure in the compartment. The procedure has a high rate of success but many patients require skin grafts to heal the surgery site.     Chronic compartment syndrome can result from running, a change in physical activity, exercise without proper stretching, the use of braces and wrapping or taping a limb too tight.     Acute compartment syndrome is the more severe form of this injury. It is generally caused due to some sort of trauma to the compartment. Bone fractures, tearing the muscle itself, blood clots and blockages, extreme workouts, anabolic steroid use and crush injuries are typical causes of this condition.     While chronic compartment syndrome is not a life-threatening medical emergency, acute compartment syndrome is extremely dangerous. It allows a four to eight hour window in which the pressure of the severe swelling can kill off all of the capillaries and muscle and nerve cells in the compartment.     Once this happens, the limb would have to be amputated or eventually death would occur from a lack of oxygen. When acute compartment syndrome occurs from a bone fracture in the leg or arm, the limb should not be casted until the pressure stabilizes. A splint should be applied until the swelling recedes.      If acute compartment syndrome is not diagnosed in time and the cells in the compartment die off, infection and gangrene will set in. This would be the reason that amputation would be needed. Renal failure is another likely result. The tissue and nerve cells can survive for up to four hours before the damage becomes irreversible.     Compartment syndrome is a condition that needs to be monitored closely for several days following the initial injury. A patient is still at high risk for three to six days after the initial cause of swelling in the compartment. In severe cases, a hospital stay is required to record the frequent examinations and pressure measurements. Some studies show that maximum swelling due to an injury may take 21 to 36 hours to peak. This is one of the reasons that rest is particularly important because any slight increase in pressure can trigger the need for emergency surgery.     Since pain is common with any injury but also a major symptom in acute compartment syndrome, it can be interpreted wrong, tolerated and remain undiagnosed. The pain level with acute compartment syndrome is severe. As pressure builds in the compartment, the feeling is very tight. Movement can be excruciating as the pressure compresses against the muscle. Skin will feel stretched and the affected area can experience a tingling or burning sensation. Patients will also feel a palpitation in the area.     Once the pressure is tested in the compartment and diagnosis is confirmed, treatment begins with complete rest, ice and elevation. During this time the muscle will feel tight and the pain will be severe. Compartment pressures must be monitored and when the readings maintain a high number, emergency surgery is required.     During the fasciotomy, a long incision is made in the fascia to release the pressure. The wound is covered with a dressing and left open for 48 to 72 hours before closure. Due to this nature, skin grafts are often required to close the wound.    Acute compartment syndrome is a typical injury of motorcycle riders as a result of being run over by the bikes, thus crushing an arm or a leg. COMPARTMENT SYNDROME    Page 5     Football players also tend to be prone to acute compartment syndrome from injuries received by hard hits when helmets come in contact with the thigh during a tackle. If these injuries are not treated properly with acute compartment syndrome taken into consideration, the result can be permanent paralysis of the limb.     Compartment syndrome does not just affect running athletes and trauma victims. Bodybuilders and bowlers often suffer from a tightening of the muscle in the wrist. This is more commonly known as carpal tunnel syndrome. It is also a medical condition that is common among writers and typists or anyone who performs repetitive motions with their fingers and wrists. Carpal tunnel syndrome affects the muscles in the wrist creating a compartment syndrome.     There needs to be more of an awareness made on the symptoms, treatment and severity of compartment syndrome. People sometimes shake the signs off as a complication from the injury, expecting pain and swelling. Medical personnel involved in treating motorcycle riders and athletes should understand the depth of the injury because in the case of compartment syndrome, time is critical. REFERENCES Medline Plus (04/05/07) Medical Encyclopedia: Compartment Syndrome. Retrieved 4/12/07 fom nlm.nih.gov/medlineplus/ency/article/001224.htm Pediatric Orthopaedic Society of North America (02/05). Compartment Syndrome. Retrieved 4/13/07 from http://orthoinfo.aaos.org Swain, R. MD and Ross, D. MD 03/99. Lower Extremity Compartment Syndrome. Retrieved 04/13/07 from postgradmed.com/issues/1999/03_99/swain.htm Wikipedia, the Free Encyclopedia. (2007) Compartment Syndrome. Retrieved 4/12/07 from http://en.wikipedia.org/wiki/Compartment_syndrome
Saturday, October 19, 2019
All what you need to know about Down syndrome
All what you need to know about Down syndrome Down syndrome (also known as trisomy 21) is a genetic disorder in which a person is born with an extra copy of their 21st chromosome. This disorder causes the patient to go through physical development delays, mental disabilities and a variety of distinguishable facial features. The possibility of being affected by down syndrome occurs by chance, the parents of the infected persons are genetically normal. This disability is permanent, and it usually shortens life expectancy. Although the disease has no known cure, people infected with down syndrome can still live very healthy and fulfilling lives. Medical advances have created support for people and their families that have been affected by down syndrome, providing opportunities to help prevail over the challenges of this disorder. In a normal cell, there are 23 pairs of chromosomes, making it a total of 46. 23 of the chromosomes come from the mother’s egg and the other 23 comes from the father’s sperm. The XY chromosome includes the Y chromosome found in the sperm and the X chromosome found in the egg. In Down syndrome, there are three copies of chromosome 21 instead of two, this is called a chromosomal abnormality. The additional chromosome is either as a whole (trisomy 21) or parts of it (translocations). The effects of Down syndrome are different from person to person depending on how long the extra copy, the infected genetic background, and random possibilities. Down syndrome can affect all humans and similar effects have been found in other species (e.g chimpanzees and mice). Scientists have created transgenic mice with the human chromosome 21 and their own chromosomes. There are three chromosomal patterns that result in Down syndrome: trisomy 21, translocation and mosaicism. Trisomy 21 also known as nondisjunction is when a baby has 21 chromosomes instead of two. When a pair of 21 chromosomes fails to separate properly either in the egg or sperm. The extra chromosomes go on to be replicated into the cell in everybody. 95% of people with Down syndrome have trisomy 21. Translocation occurs in only 3% to 4% of all cases. In translocation, a part of chromosome 21 breaks off during cell division then attaches itself to another chromosome. The extra piece of the 21st chromosome causes the characteristics of down syndrome, translocation and may show that the infected person’s parents are carrying chromosomal material that is arranged in an unusual manner, genetic counselling can be sought to ascertain more information when these circumstances occur. Mosaicism is when disjunction of chromosome 21 takes place in one of the cell divisions after fertilization. After this happens there is a mixture of two types of cells, some contain 46 chromosomes and others 47. The cell that contains 47 chromosomes has an extra 21st chromosome. This type of Down syndrome only occurs in 1% to 2% of all cases of Down syndrome. There is a slight difference between trisomy 21 and Down syndrome. Nondisjunction is when the homologous chromosomes don’t separate properly during cell division. There are three types of nondisjunction, when the sister chromatids don’t separate during mitosis, when the sister chromatids don’t separate during meiosis II and when the homologous chromosomes don’t separate during meiosis I. Nondisjunction causes the daughter cells to have abnormal chromosome numbers. While trisomy 21 is when there is an extra copy of the chromosome. The average age that people with down syndrome live is increasing from 10 years in 2010 to 60 years now. However, their survivorship is determined by some heart problems by some factors; about 12% die in their first year, 60% of those with cognitive heart problems live to 10 years old and 50% live to 30 years old. 85% of those with no heart problems live to 10 years old and 80% live to 30 years old. Only 10% lives to 70 years of age. Down syndrome cannot be cured. During pregnancy, if the pregnant woman goes through prenatal scanning and the baby is found to have down syndrome 95% of those pregnancies are terminated. 20% to 50% of individuals with Down syndrome have problems of the thyroid gland, low thyroid is the most common form, occurring in half of all infected persons. These problems can be due to a poorly or totally non-functioning thyroid at birth also known as congenital hypothyroidism which happens very rarely or develops later due to an attack on the thyroid by the immune system. The rate of heart diseases in newborns with down syndrome is around 40 %, out of all the diseases only about 80%have a ventricular septal defect or atrioventricular septal defect (this one is more common). The mitral valve problems become common as people grow even in the people without heart problems at birth. People with Down syndrome have a lower risk of their arteries being hardened. Other problems that may include the art eries are tetralogy of Fallot and patent ductus arteriosus. The risk of having cancer in infected persons is not changed but the risk of leukaemia and testicular cancer is increased and risk of solid cancers is reduced. Solid cancers are less common because of the increased expression of tumour suppressor genes that are in the chromosome 21. Cancers of the blood are 10 times more common in children than with down syndrome. Specifically, acute lymphoblastic leukaemia is about 20 times more common and the megakaryoblastic form of acute lymphoblastic leukaemia is 500 times more popular. Transient myeloproliferative disease is a disorder of blood cell production that does not happen outside of Down syndrome, it affects about 7% of newly born babies. The disorder is not serious but can be sometimes can be deadly. Most times it is resolved without treatment but, those that have it are at risk of developing acute lymphoblastic leukaemia. The hypothalamic dysfunction is the primary cause of GH deficiency and growth retardation, although there has been minor research on how down syndrome affects our systems (excretory, nervous) there hasn’t been any major research with trustworthy results. People with Down’s syndrome usually tend to develop hypothyroidism but sometimes they can have hyperthyroidism although this is much less common. Hypothyroidism is hardly ever present at birth and it is more likely for people with down syndrome to develop it as they get older. This usually happens because of autoimmunity meaning when the body’s defence system attacks itself it is sometimes called hashimoto’s hypothyroidism (although there can be other causes). Trisomy pregnancies occur when the embryo has three copies of a chromosome rather than the normal two. The most common trisomy is Down’s syndrome or trisomy 21.
Friday, October 18, 2019
The Influence of the Columian Exchange throughout North America Research Paper
The Influence of the Columian Exchange throughout North America leading up to the Revolutionary War - Research Paper Example Europeans started this contact and habitually decided its terms. For Africans and Native Americans, their life in America was to be steeped in tragedy for the next three centuries. Disease The most devastating consequences of the lengthy isolation of the American continent were to be biological. Africans, Asians and Europeans had been exposed to each other’s maladies for centuries because they frequently came into contact with each other through trade practices (Peabody and Grinberg, 2007). By 1500, these three ethnic groups had acquired immune systems that moderately protected them from most illnesses. Native Americans, who remained unexposed to other ethnic groups, were larger in body size and healthier than Columbus and his co-partners in 1492, when the two groups first met (McNeill, 2012). However, their long isolation from other ethnicities meant that their bodies had no immunity against the diseases that other ethnic groups quickly mastered. European and African maladies would soon begin ravaging the American Indian tribes. Smallpox quickly became the largest killer, even though influenza and measles also decimated huge populations of American Indians. The native population of Mexico, for example, was approximately 17 million, when in 1519 Cortes and his men reached the land (McNeill, 2012). A century later, there were less than a million natives remaining in Mexico, simply as a result of communicable diseases. It has been estimated that the entire Native American population was reduced by 90 percent within the first 100 years after European travelers first reached the American shores. This fact hugely contributed to the subsequent European domination of the continent. The Introduction of Food Crops One of the few advantages of the Columbian Exchange era was the exchange of knowledge of different crops between different ethnic groups. Prior to the Columbian Exchange, there had been no potatoes cultivated in Europe (Hughes, 2003). The Columbian Exch ange also hugely expanded the scale of the production of some well-liked drugs as well as crops such as sugar, coffee and tobacco use to many Europeans (Crosby, 2008). In the next few centuries potatoes would grow to be a major ingredient of Russian Vodka and the staple food in Ireland (Hughes, 2003). Chocolate, a plant only previously grown in the Americas, soon became a favorite in Europe. Plants like peanuts and maize were also transported to Africa by Portuguese. These robust crops could be cultivated in arid regions that hardly sustained any other type of edible plants (Hall, 2003). There are many historians who believe that the introduction of maize in Africa resulted in an increase in population. Before Columbus reached the American shores in 1492, the Americas had many different domesticated crops such as cassava, maize (corn), squashes, potatoes and different types of beans. Other plants that were less actively cultivated included papaya, sweet potato, avocado, pineapple, t omato, guava, chili peppers, peanuts, and cacao (McNeill, 2012). In spite of maize’s success in readapting to the African climate, the potato did not do as well in Africa. The potato would have a stronger impact in developing the Eurasian populations (Bond,
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