Territorial evolution of ArizonaW
Territorial evolution of Arizona

The following timeline traces the territorial evolution of the U.S. State of Arizona.

Territorial evolution of CaliforniaW
Territorial evolution of California

The following timeline traces the territorial evolution of California, the thirty-first state admitted to the United States of America, including the process of removing Indigenous Peoples from their native lands, or restricting them to reservations.

Territorial evolution of ColoradoW
Territorial evolution of Colorado

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

Territorial evolution of IdahoW
Territorial evolution of Idaho

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

Territorial evolution of MontanaW
Territorial evolution of Montana

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

Territorial evolution of NevadaW
Territorial evolution of Nevada

The following outline traces the territorial evolution of the U.S. State of Nevada.

Territorial evolution of New MexicoW
Territorial evolution of New Mexico

The following timeline traces the territorial evolution of the U.S. State of New Mexico.

Outline of North Dakota territorial evolutionW
Outline of North Dakota territorial evolution

The following outline traces the territorial evolution of the U.S. State of North Dakota.

Outline of Oregon territorial evolutionW
Outline of Oregon territorial evolution

The following outline traces the territorial evolution of the U.S. state of Oregon.

Territorial evolution of South DakotaW
Territorial evolution of South Dakota

The following outline traces the territorial evolution of the U.S. State of South Dakota.

Territorial evolution of UtahW
Territorial evolution of Utah

The following timeline traces the territorial evolution of the U.S. State of Utah.

Outline of Washington territorial evolutionW
Outline of Washington territorial evolution

The following outline traces the territorial evolution of the U.S. State of Washington.

Outline of Wyoming territorial evolutionW
Outline of Wyoming territorial evolution

The following outline traces the territorial evolution of the U.S. State of Wyoming.