Appeasement

Appeasement is a diplomatic policy of meeting political demands to a possibly-aggressive power to avoid conflict.
The term was used especially for the foreign policy of the British governments of Prime Ministers Ramsay MacDonald, Stanley Baldwin and Neville Chamberlain towards Nazi Germany and Fascist Italy between 1935 and 1939. It was supported by most people there and in France, most notably under Édouard Daladier, because people feared another world war.