• 1787

The Constitution, written in 1787, created a new system of U.S. government—the same system we have today. James Madison was the main writer of the Constitution. He became the fourth president of the United States. The U.S. Constitution is short, but it defines the principles of government and the rights of citizens in the United States. The document has a preamble and seven articles. Since its adoption, the Constitution has been amended (changed) 27 times. Three-fourths of the states (9 of the original 13) were required to ratify (approve) the Constitution. Delaware was the first state to ratify the Constitution on December 7, 1787. In 1788, New Hampshire was the ninth state to ratify the Constitution. On March 4, 1789, the Constitution took effect and Congress met for the first time. George Washington was inaugurated as president the same year. By 1790, all 13 states had ratified the Constitution.

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