The Aztec government was similar to a monarchy where an Emperor or King was the primary ruler. They called their ruler the Huey Tlatoani
The Mayans developed a hierarchical government ruled by kings and priests. They lived in independent city-states consisting of rural communities and large urban ceremonial centers.
The Inca government was called the Tawantinsuyu. It was a monarchy ruled by a single leader called the Sapa Inca