The U.S. amendment that granted women the right to vote is the 19th Amendment. Ratified in 1920, it marked a significant milestone in the women's suffrage movement, asserting that the right to vote cannot be denied on the basis of sex. This victory for women came after decades of activism and struggle, highlighting issues of gender equality and civil rights. The amendment not only empowered women politically but also contributed to broader changes in societal perceptions of gender roles. Its passage paved the way for subsequent advancements in women’s rights and participation in the political sphere.