What effect did the Columbian Exchange have on the Native American
population?
O
A. It decreased the population because Native Americans were not
immune to European diseases.
B. It increased the population because the introduction of cattle
provided Native Americans with an alternative food source.
O
C. It increased the population because the introduction of the gun
discouraged tribes from fighting against each other.
O
D. It decreased the population because many Native Americans
moved to Europe.