Why was cattle ranching an important business for the great plains

Why was the the superficial prosperity in the 1920s

Were african-americans allowed to serve in the military in wwi?

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire