Answer:
D. The migration of workers
The Columbian exchange is a term to refer to the exchange that occurred between the New World and the Old World (Asia, Africa, and Europe) between the XV and XVI centuries in which they were transferred:
- Agricultural products
- Animals
- Technological advances
- Diseases
- Slaves of African origin
This exchange included the arrival of diseases, slaves from Africa, seeds of external plants, animals, and tools and gadgets for various purposes to the New World from the Old World. On the other hand, the Europeans took from America natural resources and precious metals such as gold and silver for their territory.
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<u>The correct answer is C. Atlantic Charter.</u> In 1941 Winston Churchill embarked on the "Prince of Wales" in order to meet with and Franklin D. Roosevelt, met in Newfoundland, the two raised their concerns and proceeded to the common decision to end the war.
The Tian Shan mountain range lies along the borders of Russia and northwestern China, which have proved throughout history to be a major barrier to entry in both directions.