Which international organization was created after World War I to promote peace?

The League of Nations was established after World War I with the primary aim of promoting peace and preventing future conflicts. Its formation was in response to the devastation caused by the war, reflecting a collective desire among nations to create a framework for international diplomacy and cooperation. The League was intended to provide a platform for resolving disputes peacefully and fostering a sense of unity among countries to avoid the recurrence of such widespread conflict.

In contrast, while the United Nations was created after World War II with a similar peacekeeping objective, it did not originate from the aftermath of World War I. The World Health Organization focuses on global health and larger public health initiatives, while the International Monetary Fund centers on international financial stability and economic cooperation. These organizations, while significant in their respective domains, were not specifically designed with the goal of promoting peace after World War I. Therefore, the League of Nations stands out as the correct choice.