Jane Addams was an American social reformer, sociologist, and pacifist, a pioneering figure in social work and feminism. In 1889, together with Ellen Gates Starr, she founded Hull House in Chicago, one of the first settlement houses in the United States. It offered educational, social, and cultural services to immigrants and the working class, becoming an international model. Her commitment extended to the women's suffrage movement and a staunch pacifism, which led her to oppose American intervention in World War I and to co-found the Women's International League for Peace and Freedom. An author of numerous essays and books, her most influential works include the autobiography "Twenty Years at Hull-House" (1910) and "Peace and Bread in Time of War" (1922). For her tireless work for peace and social justice, she was awarded the Nobel Peace Prize in 1931, becoming the first American woman to receive this honor.