Elizabeth Cady Stanton was an early advocate for women's voting rights. A prominent figure in the American women's suffrage movement, she co-organized the Seneca Falls Convention in 1848, where she presented the Declaration of Sentiments—demanding equal rights for women, including the right to vote. Stanton's activism and writings played a crucial role in advancing women's rights in the United States and inspired future generations of activists. Her pioneering efforts laid groundwork for the eventual passage of the 19th Amendment.