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Arizona is admitted as the 48th and the last contiguous U.S. state.
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Arizona
U.S. state
Arizona is a state in the Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the northwest and California to the west, and shares an international border with the…Source: Wikipedia (CC BY-SA)
Contiguous United States
48 states of the US apart from Alaska and Hawaii
The contiguous United States, also known as the U.S. mainland, officially referred to as the conterminous United States, consists of the 48 adjoining U.S. states and the District of Columbia of the United States in central North America. The term excludes the only two…Source: Wikipedia (CC BY-SA)
U.S. state
Constituent polity of the United States
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sovereignty with the federal government.…Source: Wikipedia (CC BY-SA)