What were the contribution of early American sociologists Jane Addams and w.e.b. dubois?

Jane Addams was a pioneering social reformer and co-founder of Hull House, which provided services to immigrants and the poor, emphasizing the importance of community engagement and social responsibility. W.E.B. Du Bois, a prominent African American sociologist and civil rights activist, was instrumental in highlighting racial issues in America, co-founding the NAACP and advocating for the rights of Black Americans through his concept of "double consciousness." Both contributed significantly to the understanding of social inequality and the need for social reform in their respective contexts. Their work laid the foundation for modern sociology by addressing social justice, race, and community welfare.