1863    Indian Wars: Chief Pocatello of the Shoshone tribe signs the Treaty of Box Elder, agreeing to stop the harassment of emigrant trails in southern Idaho and northern Utah.

1890    Idaho is admitted as the 43rd U.S. state.

1976    Collapse of the Teton Dam in Idaho, United States.

1992    Ruby Ridge Standoff in Idaho

1992    FBI HRT sniper Lon Horiuchi shoots and kills Vicki Weaver during an 11-day siege at her home at Ruby Ridge, Idaho.