Arizona Territory 1877. The capital was finally moved to Phoenix on February 4, 1889. The territory was admitted to the Union as the 48th state on February 14, 1912. Proclamation to the People of Arizona. Arizona Territory The Territory of Arizona (also known as Arizona Territory) was a territory of the United States that existed from February 24, 1863 until February 14, 1912, when the remaining extent of the territory was admitted to the Union as the state of Arizona. It was created from the western half of the New Mexico Territory during the American Civil War. Following the expansion of the
State of the Union of this "State of the Union Clause" of the Constitution is not specific, since the 1930s, the President makes this report annually in late January or early February. Between 1934 and 2013 the date has been as early as January 3, and as late as February 12. While not required to deliver a speech, every president since Woodrow Wilson, with the notable exception of Herbert Hoover, has made at least one State of the Union report as a speech delivered before a joint session of Congress. Before that time, most presidents delivered the State of the Union as a written