The three main objectives of the Constitution are:
1) It makes a national government which consists of the three branches, with checks and balances among them.
2) It divides power between states and the federal government.
3) It protects the liberties of the American people.
Muhammad's first revelation was according to Islam, was when Gabreil spoke to him in 610 CE. He told him to follow the Quaran, the equivalent to a Bible for christanity
The Great plains, not sure why honestly.