When Hitler began to break the Treaty of Versailles, the League of Nations (that was mainly just Britain and France) appeased him, just as they had done with Japan and Italy. As Hitler broke more and more rules, Germany became more powerful, but Hitler was still appeased. In the end, there came a point where Britain and France realised that if they didn't attack now, Germany would be come too powerful for them to defeat, however, by this time, Germany had gained lots of land, soldiers and technology and were a powerful force in Europe. If Britain and France had attacked Germany in the beginning when they began to break the Treaty of Versailles, when Hitler sent German troops in the Rhineland, then, as Hitler himself said, the war would only have last 6 weeks, instead of 6 years. Appeasement was a large cause of the war as it allowed countries to get what they wanted, and in the end, allowed Germany to become such a powerful force in Europe. It was through appeasement that Germany got what they wanted, and it was only when appeasement stopped, that the most devastating war in history began.