What effect do the Colombian exchange have on resources in the Americas? A) resources increased because of trade alliances
B) Resources decreased because of European trade
C) Resources increased because of new farming technology
D) Resources decreased because of pour farming techniques​

Answer which of the following was a major outcome of european imperialism in africa after the industrial revolution? o a. the area around the suez canal experienced decades of military conflict. b. africans in the belgian congo suffered forced labor and oppression. o c. the discovery of rich natural resources led to african economic prosperity. o d. europeans brought disease to central africa, killing thousands.