Which amendment granted women the right to vote?

The 19th Amendment is significant because it specifically states that the right to vote cannot be denied or abridged on account of sex, thereby granting women the legal right to participate in elections. Ratified in 1920, this amendment marked a pivotal moment in the women's suffrage movement, as it recognized the equality of women in terms of voting rights alongside men. The establishment of this amendment was the culmination of decades of activism and struggle for women’s rights, making it a key milestone in American history.

The other amendments mentioned, while important in their own contexts, do not address voting rights for women. The 15th Amendment focuses on voting rights regardless of race, the 21st Amendment repeals Prohibition, and the 25th Amendment deals with presidential succession and disability.