Final answer:
Dealing more effectively with the failure of peace efforts during World War II may have required early resistance to aggression, a robust international organization capable of enforcing peace, and a post-conflict emphasis on accountability and rebuilding.
Step-by-step explanation:
Determining how the failure of peace efforts could have been managed more effectively during World War II involves analyzing the complex geopolitical landscape of the time. Failure to achieve sustained peace was linked to the policy of appeasement, the emergent global reactions to the Great Depression, and the ideologies that fueled authoritarian regimes. To address the failures of peace efforts more effectively, stronger initial resistance to aggressive powers might have deterred escalation. The predecessor to the United Nations, the League of Nations, was unable to prevent the aggressions that led to World War II, underscoring the importance of a more robust international body equipped with the means to enforce resolutions.
Post-war, the establishment of the United Nations and the rebuilding efforts in war-torn countries like Japan, which included a new constitution with a focus on demilitarization and human rights, represented steps towards a more durable peace. The Nuremberg Trials and emphasis on accountability for war criminals contributed to the global standard for justice. In essence, effective strategies for dealing with the failure of peace might include the early and decisive confrontation of aggressive expansionism, strong international coalitions, and the imposition of justice post-conflict.