대이동, or the "Great Migration," refers to a significant movement of people, often driven by various factors such as war, famine, or economic opportunity. This phenomenon can be observed in different historical contexts, where large groups relocate to new areas in search of better living conditions or safety. One notable example of 대이동 is the migration of Korean people during the Korean War, when millions fled from the North to the South. Such migrations can have lasting impacts on demographics, culture, and social structures in both the origin and destination regions.