In the book How the Other Half Lives, Jacob Riis sought to expose the terrible living conditions experienced by 1 workers in urban slums and tenerents

2. African Americans in the segregated South

3. the rich in their mansions

4. Native American Indians on reservations

b - those executed came from every social and economic class

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.

agriculture revolution