Territorial evolution of Idaho

The following chronology traces the territorial evolution of the U.S. State of Idaho.

An enlargeable map of the United States after the Constitution of the United States was ratified on March 4, 1789.
An enlargeable map of the United States after the Treaty of 1818 took effect on January 30, 1819.
An enlargeable map of the United States after the Adams–Onís Treaty took effect on February 22, 1821.
An enlargeable map of the United States after the Oregon Treaty took effect July 17, 1846
An enlargeable map of the United States after the creation of the Territory of Oregon on August 14, 1848.
An enlargeable map of the United States after the creation of the Territory of Washington on March 2, 1853.
An enlargeable map of the United States after the admission of Oregon to the Union on February 14, 1859.
An enlargeable map of the United States after the creation of the Territory of Idaho on March 3, 1863.
An enlargeable map of the United States after the creation of the Territory of Montana on May 26, 1864.
An enlargeable map of the United States after the creation of the Territory of Wyoming on July 25, 1868.
An enlargeable map of the United States after the admission of Idaho to the Union on July 3 1890.
An enlargeable map of the United States as it has been since Hawaiʻi was admitted to the Union on August 21, 1959.

Timeline

See also
Montana Territorial evolution of Montana
Nevada Territorial evolution of Nevada
Oregon Territorial evolution of Oregon
Utah Territorial evolution of Utah
Washington (state) Territorial evolution of Washington
Wyoming Territorial evolution of Wyoming

References
  1. Thirty-seventh United States Congress (March 3, 1863). "An Act to provide a temporary Government for the Territory of Idaho" (cgi-bin). Retrieved June 5, 2009.
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