Which of the following did the Maya, Aztec, and Inca all have in common?

They all grew corn as their primary crop.

They all lived mostly in a mountainous region.

They all were united into an empire.

They all had contact with the Spanish.

Verified Answer :

They all grew corn as their primary crop

Out of the following choices given, the Maya, Aztec, and Inca all had growing corn as their primary crop in common. The correct answer is A.