The name of the large arc of farmland that includes Mesopotamia is the "Fertile Crescent," since this area was especially fertile and highly conducive to crop growth.
The framers of the Constitution granted legislative power (the power to make laws) to the Congress (The Senate and the House of Representatives). The legislative branch is considered the most "democratic" branch of the government, since all major decision-makers are elected directly by the people.
They planned to meet in Philadelphia.