State governments of the United States
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In the United States, state governments are institutional units exercising functions of government within the country’s federal system, alongside the federal government. Each U.S. state's government holds legislative, executive, and judicial authority over a defined geographic territory. The United States comprises 50 states: 9 of the Thirteen Colonies that were already part of the United States at the time the Constitution took effect in 1789, 4 that ratified the Constitution after its commencement, plus 37 that have been admitted since by Congress as authorized under Article IV, Section 3 of the Constitution.