Final answer:
Appeasement was practiced by several countries after World War 1 as a means of avoiding conflict with aggressive nations. However, this policy failed when Germany invaded Poland, leading to the outbreak of World War 2.
Step-by-step explanation:
After World War 1, several countries practiced appeasement, which essentially involved giving in to the demands of aggressive nations to avoid conflict. The most notable example of appeasement was with Nazi Germany leading up to World War 2. British Prime Minister Neville Chamberlain pursued a policy of appeasement in hopes of maintaining peace, which ultimately failed when Germany invaded Poland.
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