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.
Welcome to Fort Lewis. Fort Lewis, named after Meriwether Lewis of the famed Lewis and Clark expedition, is one of the largest and most modern military reservations in the United States. Consisting of 87,000 acres of prairie land cut from the glacier-flattened Nisqually Plain, it is the premier military installation in the Northwest. Fort Lewis is situated in a key location along Interstate 5, allowing easy access to Sea-Tac airport and to the deep water ports of Tacoma and Seattle.