The Anschluss ('fusion') of 12 March 1938 was the annexation and formal union of Austria with Germany. Adolf Hitler (1889-1945), the Nazi leader of Germany, dreamed of an empire which enclosed all German speakers, his 'Greater Germany'. Hitler's military invasion met no resistance or meaningful response from foreign powers, and so Austria was absorbed into the Third Reich.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Anschluss_of_Austria/.