Answer:
The correct answer is: European imperialism brought about many changes in the African continent. Europeans forced Africans to grow cash-crops. This way of growing crops benefited Europeans. ... They also produced a surplus of food, which was used for export and not to satisfy the needs of the starving African people.
Braceros worked on farms and on railroads, making it possible for the U.S. economy to meet the challenges imposed by the war effort. existed and viewed the Bracero program as a way for the U.S. to obtain cheap labor.
Answer: D. construction and protection of roads that ensured safe and easy travel
Explanation:
Under Genghis Khan and his descendants, the Mongols conquered much of Asia and some of Eastern Europe such that they created the largest land empire ever seen.
Even though these Mongols could be brutal in conquest, they increased trade in the region by repairing the networks of roads that connected their conquered areas as well as constructing more. The protection they afforded these roads was renowned thus making travel easy.
That would be choice C. the index fossils.
I hope this helps you! :)
