Answer: The U.S constitution.
Explanation:provided Congress the power to establish post offices.
The answer to this is choice A
Egypt developed around the Nile River, while Mesopotamia developed between the Tigris and Euphrates rivers. ... Politically, both Egypt and Mesopotamia had a government with one main ruler, but Egypt had a centralized government with a pharaoh, while Mesopotamia had a decentralized government with a king.Oct 22, 2012
