Need help pls this is so hard

Correct answer is A. Aztec and the Inca.

Explanation:

A is correct answer because Aztecs and Incas created their large empires mostly through the means of war and thus were spreading their territory.

On the other side, Mayas and Olmecs, although they had military weren't military empires, as their focus was not solemnly on the development of army.

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement

your answer will most likely be a.