Jane Addams was a pioneer in the field of social work and established the Hull House in Chicago. Founded in 1889, Hull House served as a community center aimed at providing social services and education to immigrants and the poor. Addams and her colleagues focused on improving living conditions, promoting women's suffrage, and advocating for child labor laws. Through her work, she became a key figure in the social reform movement, emphasizing the importance of community involvement and social justice principles.