What was one major consequence of the failure of collective security during the 1930s?

One major consequence of the failure of collective security during the 1930s was that it led to renewed tensions and conflicts in international relations. Collective security frameworks, such as the League of Nations, were established with the aim of maintaining peace and preventing aggression through collective action. However, during the 1930s, the inability of these organizations to address acts of aggression—such as Japan's invasion of Manchuria, Italy's invasion of Ethiopia, and Germany's remilitarization of the Rhineland—resulted in a loss of faith in international institutions. This failure not only emboldened aggressive nations to pursue expansionist policies with little fear of repercussion but also escalated tensions among countries, who began to seek security through pacts and alliances rather than through collective efforts to deter conflict. The breakdown of collective security demonstrated the fragility of diplomatic efforts to maintain peace in a time of rising nationalism and militarism, ultimately contributing to the outbreak of World War II.