Identify the factors (new resources, increased productivity, education, technology, slave economy, territorial expansion) that increase economic growth. Which of the following is true of the economic growth of the Aztec empire?

Economic growth depended upon the continued expansion of the empire.
The economy grew due to the adoption of the Aztec currency by local tribes.
The economy grew because they were more technologically advanced than nearby tribes.
The economy grew even though the Aztecs refused to trade with others.