Which Constitutional amendment granted women the right to vote?

The 19th Amendment to the United States Constitution is the one that granted women the right to vote. Ratified on August 18, 1920, this amendment states that the right to vote cannot be denied on the basis of sex. It marked a significant milestone in the women's suffrage movement, which sought to secure voting rights for women after decades of activism and struggle.

In contrast, the other amendments listed address different aspects of voting rights and civil liberties. The 15th Amendment, for instance, prohibits denying the right to vote based on race, color, or previous condition of servitude but does not mention gender. The 14th Amendment guarantees equal protection under the law and due process but again does not specifically address voting rights for women. The 20th Amendment, known as the "Lame Duck Amendment," alters the dates at which federal office terms begin and end and does not pertain to voting rights. Thus, the 19th Amendment is uniquely significant for establishing women's suffrage in the United States.