Treatment of people of color

1.How did Mexicans earn a living in the late 1800's and where did they do this works?
"Mexicans were also vital to the development of mining and agriculture in the Southwest ."
(From the Americans Reconstruction to the 21st Century Page 288)
2.Describe African-Ameican life in 1900's (where did they move to what was their, ect)?
Most afican americans lived in the segregated south but by 1900 a nunmber of blacks had moved to northern cities.