Evacuation

From Conservapedia

Evacuation refers to the massive planned movement of population from a city or district perceived as being under threat or for other reasons. Examples include the 2008 evacuation of New Orleans prior to Hurricane Gustav, and the evacuation during the Second World War of children from the major cities of Britain. Following the Russo-Finnish War of 1939-40 the Finnish population was evacuated from the areas ceded to the Soviet Union.