Answer:
A. by staying neutral or B. the cash and carry policy
I believe the first option is correct
Big business shaped the American economy in the late 1800s and early 1900s by outproducing smaller "family business," which drove prices down. This happened in large part due to the Industrial Revolution.
The primary motivation for the non-Aztec Native Americans to help Cortes fight the Aztecs was that they were promised a share of the land that would be opened up after Cortez beat the Aztecs.