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Mexican War ends; most of Arizona becomes an American territory. -
Gold discovered near Gila River. -
Congress establishes Arizona Territory. -
Phoenix becomes Arizona's state capital. -
Arizona becomes 48th state on February 14 -
Grand Canyon national park is established -
Hoover Dam is completed -
Arizona Indians receive the right to vote -
Raul H. Castro is state's first Mexican-American governor -
Rose Mofford becomes Arizona's first female governor