Select two groups from the mayans, aztecs, and incas, and compare how they built complex governments.

The Mayans lived in independent city-states composed of rural communities and large urban ceremonial centers. 

They developed a hierarchical government ruled by kings and priests while the Aztecs government was somewhat similar to a monarchy having an Emperor or King as their primary ruler.

To answer this question, we'll talk about the Mayans and the Aztecs.

The Aztecs were an ancient civilization that lived in Central Mexico from the 1300s to the early 1500s.

The Mayans lived in a wider area, as their territory involved Southeastern Mexico, Guatemala and Belize, as well as parts of Honduras and El Salvador.

Both of them had their economies based on agriculture, but they also traded woven goods and jewelry. Both civilizations were ruled by a Monarch, who was chosen because of its relation to their Gods.