when did alaska become a territory of the united states
Territory of Alaska The Territory of Alaska or Alaska Territory was an organized incorporated territory of the United States that existed from August 24, 1912, until January 3, 1959, when it was admitted to the Union as the State of Alaska. The territory was created as the District of Alaska on May 17, 1884.
51st state Before Alaska and Hawaii became states of the United States in 1959, the corresponding expression was "the 49th state".