A famous American social reformer and activist for women's rights in the late 19th century was Elizabeth Cady Stanton. She played a crucial role in organizing the Seneca Falls Convention in 1848, where the Declaration of Sentiments, advocating for women's suffrage, was presented. Stanton's writings, including her collaboration with Susan B. Anthony on the history of women's rights, highlighted the injustices women faced. Her advocacy pushed forward the conversation on gender equality and laid the groundwork for the future women’s suffrage movement in the United States.