1. Which of the following problems did the Aztec empire share with the Inca Empire?
a. Conquered people were resentful and rebellious
b. Expansion was so rapid it overwhelmed available resources
c. Alliances were expensive and difficult to maintain
d. All of the above
2. The key reason for the growth of imperial systems in the America was
a. Increased trade and competition between the rising empires in central and south America
b. Rapid demographic growth
c. New military technologies
d. A desire to spread religious belief.