Mexico city is located on the site of the great _ empire
a mayan
b aztec
c olmec
d inca

Aztecs

Explanation:

The Aztec civilization inhabited the area of present-day Mexico City. It was one powerful and colossal empire. At the time of the most significant advancement, their empire numbered about 350,000, and the capital Tenochtitlan was the largest in the world.

The capital is recognizable for its large number of pyramids and temples, the most prominent being the sun and moon pyramids.

islam spread slowly through much of africa through trade and preaching.

this is false

richard nixon was the 37th president of the united state and didn't serve as a vice president for any president before him