Which amendment granted women the right to vote?

The 19th Amendment, ratified in 1920, is the amendment that granted women the right to vote in the United States. This amendment marked a significant victory in the long struggle for women's suffrage, which had begun in earnest in the mid-19th century. The text of the 19th Amendment states, "The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of sex." This clearly established that sex could not be a reason for denying the right to vote, thus enabling women to participate fully in the democratic process.

The 15th Amendment, while also significant, focused on prohibiting the denial of voting rights based on race, color, or previous condition of servitude, and did not address gender. The 21st Amendment repealed Prohibition but is unrelated to voting rights, and the 24th Amendment eliminated poll taxes in federal elections, which also does not pertain to women's suffrage. Overall, the passage of the 19th Amendment was a monumental step towards achieving gender equality in voting in the United States.