 |- |May 2, 1890 |Oklahoma Territory formed | | |- |July 3, 1890 |Idaho admitted | | |- |July 10, 1890 |Wyoming admitted | | |- |January 4, 1896 |Utah admitted | | |- |May 4, 1896 |Greer County given to Oklahoma Territory | | |- |August 12, 1898 |Hawaii annexed | | |- |January 17, 1899 |Wake acquired | | |- |April 11, 1899 |Guam, PR, Philippines acquired | |