What are 2 reasons why Britain and France appeased Hitler before World War 2?

Britain and France appeased Hitler before World War II primarily to avoid another catastrophic conflict like World War I, which had left deep scars on their societies and economies. Additionally, they underestimated Hitler's ambitions and believed that satisfying his territorial demands, such as the annexation of Austria and the Sudetenland, would maintain peace in Europe and stabilize the region.