Elizabeth Cady Stanton was a prominent pioneer of women's rights in the 19th century. She played a crucial role in the early women's suffrage movement, advocating for women's legal rights and the right to vote. Stanton co-organized the Seneca Falls Convention in 1848, where she presented the Declaration of Sentiments, which asserted women's equality and specifically called for the right to vote. Her writing and activism laid the groundwork for future generations of feminists and highlighted the ongoing struggle for gender equality in the United States. Stanton's work remains a cornerstone in the history of women's rights.