On what date was the Nineteenth Amendment certified as adopted?

The Nineteenth Amendment was certified as adopted on August 26, 1920.

The amendment prohibited the United States and its states from denying citizens the right to vote on the basis of sex. Tennessee supplied the required 36th state ratification on August 18, 1920. The formal certification followed eight days later, making August 26 the amendment’s official adoption date.

Congress had approved the proposed amendment in 1919 after decades of campaigning by women’s suffrage organizations. Activists including Susan B. Anthony, Elizabeth Cady Stanton, and Alice Paul helped maintain national pressure for a constitutional guarantee. The amendment was used in the 1920 presidential election.

The amendment did not immediately eliminate every barrier to voting. African American women, Native American women, Asian American women, and other groups still faced discriminatory laws and practices. The amendment established a constitutional rule, but later civil-rights legislation and court decisions were necessary to challenge many forms of voter suppression.