Which organization was founded after WWII to replace the League of Nations?

The correct response is the United Nations. Following World War II, there was a strong desire for a more effective means of ensuring international cooperation, maintaining peace, and preventing future conflicts. The League of Nations, which was established after World War I, had faced criticism for its inability to prevent aggression and maintain stability, leading to its dissolution.

The United Nations was created in 1945 with the primary goal of fostering international collaboration and promoting peace, security, and human rights across nations. It was founded by 51 countries and has since expanded to include nearly every nation in the world. Through various agencies and programs, the United Nations addresses global challenges such as poverty, conflict, health issues, and climate change.

The other organizations listed, while significant in their own right, did not directly evolve from the League of Nations in the same way. The World Health Organization focuses specifically on international public health, NATO is a military alliance formed for collective defense, and the European Union is a political and economic union aimed at fostering closer economic and political integration among European countries. None of these entities were intended to fulfill the same role regarding international peace and security as the United Nations.