Which of the Following Claims Is the Only One That

Multiple Choice

Which of the following claims is the only one that we now know was not true of early American civilizations?

A) Civilizations outgrew their capacity to grow food for their people.
B) Battles with enemy tribes forced certain groups to abandon the central parts of their civilizations.
C) The Americas were virgin land before contact with Europeans.
D) North and South America had perhaps as many as 100 million inhabitants.
E) Major droughts brought an end to some civilizations.