Sumer, the Akkadian, and the Babylonian
Answer: Presence of neurons
Explanation: I can't explain it well..
The order of Mesopotamia civilizations are in the order-Mayas, Incas and Aztecs. The first civilization arose in the Nile delta in the Egypt (ancient Kemet), then spread to Mesopotamia at the R. Tigris and R. Euphrates. In addition, the Aztecs were the only form of a large empire, and lasted about 300 years.
Her husband died in a "tragic accident" (she had her husband murdered), she was appointed full power in Russia.