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This Day in American History

August 18

1 historic event on this date

Amendment1920

19th Amendment Ratified

The 19th Amendment to the Constitution was ratified, prohibiting federal and state governments from denying citizens the right to vote based on sex, granting women the right to vote nationwide.

Why It Matters

After decades of activism, this amendment marked a major expansion of democracy, though many women of color continued to face voting barriers.

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