 Complete the following phrase:  The first permanent European-American settlers came in 1849 and 1850. Mormons had earlier established Mt. Pisgah in the eastern part of the county as a way station as they traveled west, but had left this area by 1848. Settlers used Pisgah as a base to establish farms along the Grand and Platte rivers that run through the county. They found a market for their produce with the emigrants traveling overland to California to take part in the 