12/10/1817
Missouri was admitted into the Union on August 10, 1821 becoming the 24th state to join the Union.
Arizona was admitted into the Union on February 14, 1912 becoming the 48th state to join the Union.
Washington was admitted into the Union on November 11, 1889 becoming the 42nd state to join the Union.
New Mexico was admitted into the Union on January 6, 1912 becoming the 47th state to join the union.
New Hampshire was admitted into the Union on June 21, 1788 becoming the 9th state to join the Union.
Arizona became a state on February 14, 1912. It was the 48th state.
* Month: May. * Day: Tuesday the 11th. * Year: 1858.
On 21 August 1959.
Georgia became a state in 1788 when it became the 4th state to ratify the US constitution; it was also one of the states that seceded from the union to form the Confederacy, during the period of the Civil War.
Arizona achieved Statehood oon 14 February 1912.
Oregon became a state on February 14th (Valentine's Day) 1859.
Arizona: February 14, 1912 [Valentine's Day] New Mexico, the next newest, was admitted on January 6, 1912