How was appeasement to blame for World War 2?

Appeasement, particularly the policies of Britain and France towards Nazi Germany in the 1930s, allowed Hitler to expand German territory unchecked, ultimately emboldening his aggressive ambitions. The Munich Agreement of 1938, which permitted the annexation of the Sudetenland, exemplified this approach and failed to prevent further aggression, leading to the invasion of Poland in 1939. By conceding to Hitler's demands, Western powers inadvertently encouraged his expansionist policies, contributing directly to the outbreak of World War II. Ultimately, appeasement undermined collective security efforts and demonstrated a miscalculation of Hitler's intentions.