Which of the following is true of the Maya, Inca, and Aztec civilizations?

The territory was mostly rural and flat, with plenty of farmland and few cities.

The territory was divided into independent city-states.

Corn was the most important crop.

Trade with other civilizations was uncommon.

The correct answer is C. Corn was the most important crop

Explanation:

The Maya, Inca and Aztec civilizations were all human civilization that developed before the discovery and colonization of the new world. In the case of the Maya, this civilization developed in Central America and was recognized for the creation of complex cities, and important advancements on mathematics and other fields. On the other hand, the Incas were a civilization in South America and are mainly recognized for its complex political and economic system as well and the development of agriculture in territories that had mountains and other difficult conditions. Finally, the Aztec developed in Central America and were organized in city-states.

Although each of these civilizations were particular and developed in their own way they share a common feature which was the development of agriculture and the use of corn or maize as the basis for diet and in some cases for trade, this can be explained as the crops of corn thrive in all the American continent, it was easy to grow it and store it and also it was prepared and use in different ways, which made corn the most important crop for the Maya, Inca and Aztec even there were myths related to it and in some cases the corn became the center of certain aspects in these civilizations.

I can at least tell you it isn't

The territory was divided into independent city-states. (I got a zero.)

Nor the flat land, as I remember the Aztec farmed from "Floating gardens."

The Aztec traded everything. So, If it's supposed to fit all three of them, it's already out for that option. (And all of them traded.)

I think, It'd have to be the last option left then, Corn being an important crop. It should be.