アイダホ準州
On March 4, 1863, President Abraham Lincoln signed an act creating Idaho Territory from portions of Washington Territory and Dakota Territory with its capital at Lewiston. The original Idaho Territory included most of the areas that later became the states of Idaho, Montana and Wyoming, and had a population of under 17,000. Idaho Territory assumed the boundaries of the modern state in 1868 and was admitted as a state in 1890.