Why was appeasement an ineffective strategy for dealing with german expansion before world war II

Appeasement is the diplomatic policy of making concessions to an aggressive power so as to avoid conflict. Generally this term is applied to the British foreign policy during second world war. During the second world war concessions were considered to be positive due to the treatment of Germany during first world war and also because Fascism was considered to be useful against communism. But by the time Munich pact was signed, the policy of appeasement was opposed by the British left, Labour party and Winston Churchill. Historians have been debating about the appeasement of Germany during the second world war and its consequences.

Appeasement was the British policy in 1930's to avoid war with Hitler by allowing him to expand German territory. His expansionist aim were clear when he took over Rhineland in 1936. It was not successful because it encouraged Hitler to invade more countries as there was no resistance from either France or Britain.