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 report. Since Franklin Roosevelt, the State of the Union is given typically each January before a joint session of the United States Congress and is held in the House of Representatives chamber of the United States Capitol. Newly inaugurated presidents generally deliver an address to Congress in February of the first year of their term, but this speech is not officially considered to be a "State of the Union". What began as a communication between president and Congress has become in effect a communication between the president and the people of the United States. Since the advent of radio, and