What amendment gave women the right to vote?
Nineteenth Amendment to the United States Constitution
While scattered movements and organizations dedicated to women's rights existed previously, the 1848 Seneca Falls Convention in New York is traditionally held as the start of the American women's rights movement. Suffrage was not a focus of the convention, however, and its advancement was minimal in the decades preceding the Civil War. While suffrage bills were introduced into most state legislatures during this period, they were generally disregarded and few came to a vote.[4]