Answer:
Agriculture, revolts, and trade.
Explanation:
Aksum's agriculture began to collapse because of the cutting down of trees and irregular rainfall which eroded the soil. Revolts were also taking place, especially from the North.
There is little soil, and too much sand.
A. Correct the effects of past discrimination
Answer:
When Christopher Columbus discovered America in 1492, he brought many things in Spain from America, which was new to Europe. The exchanging of plants, animals, diseases and goods (manufactured) from New World to Old and vice versa is called Columbian Exchange. The term, Columbian Exchange is named after Christopher Columbus.Things from Europe include wheat, horses, sugar, cows, pigs as well as diseases; things exchanged by the Americas include corn, potato, tomato, tobacco, beans, etc.
