Which amendment gave women the right to vote?

The 19th Amendment is significant because it formally granted women the legal right to vote in the United States. Ratified on August 18, 1920, this amendment represented a milestone in the women's suffrage movement, which had been actively advocating for this right for many decades. Prior to its ratification, women across the nation engaged in campaigns, protests, and lobbying efforts to secure equal voting rights.

In contrast to the other amendments listed, the 15th Amendment, ratified in 1870, focused on prohibiting the denial of voting rights based on race, color, or previous condition of servitude, but it did not extend those rights to women. The 21st Amendment, ratified in 1933, dealt with the repeal of Prohibition, while the 24th Amendment, ratified in 1964, eliminated poll taxes in federal elections but does not pertain to women's voting rights. Therefore, the 19th Amendment is definitively the amendment that established women's suffrage and is pivotal in the advancement of gender equality in the electoral process.