IDAHO
Idaho was the last state to be created from the Oregon Territory. At the time of its formation as a Territory, on 3 March 1853, it included all of Montana and nearly all of Wyoming. Montana became a territory in its own right in 1864 and Wyoming was created in 1868. The six original counties were formed between the years 1861 and 1865.
The southern portion of Idaho, which borders Utah, was the first section to be settled. A group of Mormon emigrants from northern Europe established permanent settlements in that region were the first known to do so.
In 1860, a mining boom attracted people from the East and Mid-West to the Idaho valleys. The construction of large irrigation systems and districts around the Snake River, which winds its way throughout this area, drew many western and Midwestern farm families to the area around 1910 to farm the newly irrigated lands.
Although Catholic and Protestant churches are represented in most of the Idaho communities, the predominant religion in the area are those who follow the teachings of the Church of Jesus Christ of Latter-day Saints. (aka Mormons).