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.
County History. Frederick County was established in 1743 out of Orange County. Frederick Lewis, Prince of Wales and the oldest son of King George II of Great Britain, was the inspiration behind the name. Commander In Chief of the Colonial Forces, General George Washington's headquarters were in Winchester, Washington.