The Yearbook of Transnational History is dedicated to disseminating pioneering research in the field of transnational history. This fourth volume is focused to the theme of exile. Authors from across the historical discipline provide insights into central aspects of research into the phenomenon of exile in the nineteenth and twentieth century. Both centuries have seen large numbers of people - left-leaning revolutionaries as well as monarchists and conservatives - fleeing revolutions, oppression, persecution, and extermination. This volume is the first publication to provide a comprehensive overview over exiles of various political and ethnic groups beginning with the French Revolution and ending with the transfer of Nazi scientists from post-World-War-II Germany to the United States. This volume contains contributions about the refugees created by the French Revolution, the Forty-Eighters who were forced out of Germany after the failed Revolution of 1848/49, the anarchists Emma Goldman and Alexander Berkman, Vietnamese anti-colonial activists in France, the exiles of Nazi Germany, and the transfer of Nazi scientists such as Wernher von Braun to the United States after World War II.