Why did the britain, france, and the united states embrace the policy of appeasement? they believed that if they appeased hitler’s demands, he would stop any future pursuits of territories. they believed appeasement could buy them time to increase their own military capabilities. appeasement meant they had the power to dictate whether the soviet union and italy gained any power in the annexed territories. the leaders thought that a policy of appeasement would deter other countries from taking aggressive actions in europe.