Before the American Revolutionary War, each state had its own constitution, which gave people certain rights, such as freedom of speech, religion, and the press. During the war, the 13 colonies united to free themselves from British rule. The states were very different from each other, but they realized that in order to grow and prosper, they needed to form a union.
The states joined together to set up a central covernment. Delegates from each state met and a plan for unity was initially submitted at the Second Continental Congress on July 12, 1776. After much debate, on November 15, 1777, the states finally established a "firm league of friendship" that became known as the Articles of Confederation. The Articles, however, did not go into effect until March 1, 1781.