What does external migration mean? The definition of external migration is migrating, or moving, to a new home in a different state, country, or continent. This is a form of human migration. Birds migrate a â¦ t specific times of the year and travel to other states or countries as the seasons change.
Fort Lewis was originally established in 1917 with the passage of a Pierce County bond measure to purchase 70,000 acres (280 km2) of land to donate to the federal government for permanent use as a military installation. A portion of the initial land was taken from the Nisqually tribe's reservation.
Adams County, Washington. Adams County is a county in the U.S. state of Washington. As of the 2010 census, the population was 18,728.[1] The county seat is at Ritzville, and its largest city is Othello. The county was formed out of Whitman County on November 28, 1883[2] and is named for the second President of the United States, John Adams.