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Answer:
The Columbian exchanged fostered massive changes in both the Americas and Europe.
For the Americas, the first, and most radical change was the decimation of the Native American population, due to the spread of diseases of Eurasian origin, such as measles and syphillis, for which the Native Americans did not have any defenses. According to some historians, the spread of this diseases killed up to 95% of the pre-columbian Native American population.
The second change is related to the first, and was the immigration of many Europeans to the Americas: Spaniards to Spanish Latin America, Portuguese to Portuguese Latin America, and so on.
A third change came from the introduction of Eurasian goods: from horses, to cows, to apples, to rice and wheat. This changed the lifestyle and diet of even Native Americans. For example, Native Americans in the United States adapted to the use of horses, which became a crucial part of their culture.
Olmec civilization was the society that lived along the west coast
It made an agricultural industry in the south possible.
For those owning plantations, it made great wealth possible.
It set up a class system.
Even people with small farms seemed to have been able to afford 1 slave, so the south had economic reasons for engaging in the civil war. There were 69000 farms in the south when the war broke out. Each had at least 1 slave so they were very dependent on that labor.
Truman was elected to be a judge in the jackson county court in kansas city, missouri in 1922.
