The Constitution of the United States comprises the primary law of the U.S. Federal Government. It describes the three chief branches of the Federal Government and their jurisdictions, and lays out the basic rights of citizens of the United States.
The Constitution consists of a Preamble, seven Articles, and twenty-seven Amendments.
In 1791, Americans added a list of rights to the Constitution. The first ten amendments became known as The Bill of Rights.
The Constitution was framed by a convention of delegates from twelve of the thirteen original states in Philadelphia in May 1787. Rhode Island failed to send a delegate.
The Constitution was signed on September 17th, 1787 and was ratified by the necessary nine states in 1788.
The Constitution of the United States is the oldest federal constitution and shortest.