Which statement about cowboy life is true?

a. cowboys included whites, african-americans, and hispanics.
b. cowboys drove their own cattle herds across the great plains and became rich. c. almost all cowboys were veterans of the civil war from the north.
d. cattle drives provided cowboys a reliable source of year-round income.

Why were americans concerned about the future of north and south america? check all of the boxes that apply. they worried that european countries would take over independent countries in latin america. they thought that european nations could threaten democracy in the united states. they believed that europe would never again return to the americas.