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This Day in American History

October 24

1 historic event on this date

Historical1945

United Nations Founded

The United Nations Charter took effect, establishing the international organization dedicated to maintaining peace, security, and cooperation among nations. The United States was a founding member.

Why It Matters

The UN represented a new approach to international relations and American engagement with the world after World War II.

Explore the Principles Behind the History

Every event in American history connects to the founding principles. Discover the ideas that shaped these moments.

View the 28 Founding Principles