Answer:
The Columbia Exchange is also known as the Great Exchange occurred in the middle of 1940's.
Explanation:
The Great Exchange is an exchange of cultures and livelihood of between Eastern and Western Hemisphere, in the areas of politics, economics, and social back ground.
The great exchange was caused by a strong desire for continents such as Europe, America, Africa and Asia, to participate in joint trading activities, which affected every strata (politics, economics , religion ) of the people and culture.
Crops such as Beans, were exported from America to Europe, Africa and Asia, and eventually grown in the continents they were imported to. As a result, they were issues of epidemics following the trade exchange, but such epidemics were managed eventually.
Physical boundarie
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Using an idealistic approach and evaluating every possible alternative before purchasing a laptop is usually indicative of the formal operational stage of cognitive development, the formal period is the last stage of development and is characterized by two apparently independent features that have a lot of relationship between them. It is the moment in which the insertion in the world of adults takes place, with all the problems that this entails, but it is also the period in which the individual begins to be able to handle the hypothetical deductive thought characteristic of science.