Sudetenland, Czechoslovakia had many ethnic Germans, which became apart of Czechoslovakia under the dissolution of Austria-Hungary. Under this premise and the claim that the ethnic Germans were being mistreated, Hitler wanted to annex Sudetenland, which was also covered in mountains as a defense and had many raw materials. So the Munich Pact in September 1938, another act of appeasement, gave Sudetenland to Germany. The French saw no obligation to protect Czechoslovakia and the British were not in a place to offer military support.