Placing a distinct focus on the role of the sending state, this book examines the history of postwar Japan's migration policy, linking it to the larger question of statehood and nation-building in the postwar era. Pedro Iacobelli delves into the role of states in shaping migration flows by exploring the genesis of the state-led emigration from Japan and the US-administered Ryukyu Islands to South America in the mid-20th century.