The correct answer is Anschluss. It is a German word that, in a political context, means union or annexation. It was used to refer to the merger of Austria and Nazi Germany into one nation, on March 12, 1938, as a province of the Third Reich. This situation lasted until May 5, 1945, when the Allies occupied the German province of Ostmark. The allied military government ended in 1955 when the new State of Austria was formed.
