What was the Munich Agreement and who signed it?

The Munich Agreement was a settlement reached in September 1938 among Germany, the United Kingdom, France, and Italy, allowing Nazi Germany to annex the Sudetenland region of Czechoslovakia in exchange for a promise of no further territorial expansion. The agreement was signed by British Prime Minister Neville Chamberlain, French Premier Édouard Daladier, Italian dictator Benito Mussolini, and German Chancellor Adolf Hitler. It is often cited as a classic example of the policy of appeasement, which ultimately failed to prevent World War II.