One of the oldest phenomena in the history of mankind is migration, whether peaceful or violent, voluntary or forced, barely noticeable outfl ow or mass movements. In the 19th century, regional migration to frontier territories, as for example in the Russian Empire or the United States of America, was a natural object of research. In the 1960s there was renewed interest in migration history in Western Europe due to the increase of immigration. With the collapse of the Soviet Union and the so-called Eastern Bloc, the history of borders came again into focus, leading to a new generation in migration history. This development was reinforced by