Why was susan b. anthony so significant during the progressive era?

Susan B Anthony was a woman's right activist and social reformer and she played a big role in the women's suffrage movement.She was really a strong and outspoken advocate of women's rights,she and Elizabeth Cady Stanton founded the National women's suffrage association in 1869,but most importantly her role was important in the progressive era because she demanded that the Fourteenth Amendment include a guarantee of the vote for women as well as for African-American males.