After the end of World War I, Liechtenstein concluded a customs and monetary agreement with Switzerland and entrusted its larger neighbor with its external relations. Following the Austrian Anschluss of March 1938, Prince Franz abdicated in favor of his third cousin, Franz Joseph II. Franz's wife Elisabeth von Gutmann was Jewish, and it was worried that her ancestry could provoke Nazi Germany. With the German occupation of Czechoslovakia, the vast lands that the House of Liechtenstein owned there were confiscated, forcing Prince Franz Joseph to move to Liechtenstein itself, the first prince to take up residence within the principality.