What caused us opinion to be against gremany?

Public opinion against Germany, particularly during World War I and World War II, was shaped by a combination of militarism, aggressive expansionist policies, and widespread Propaganda that portrayed Germany as a threat to global peace. Events such as the invasion of Belgium in WWI and the atrocities committed during WWII, including the Holocaust, further fueled anti-German sentiment. Additionally, economic factors and nationalistic fervor contributed to a perception of Germany as a common enemy, solidifying opposition among allied nations.