PLEASE HELP In what way did mountain men and trappers prepare the West for settlement?
a they paved roads through the west
b they killed most of the dangerous animals
c they fought off most lf the hostile indian tribes
d they mapped trails and helped build forts

How did the cleveland massacre impact standard oil in 1872? standard oil hired all the laborers who were nearly killed during the cleveland massacre. standard oil became a monopoly in the cleveland oil market after the cleveland massacre. standard oil was bought out by other companies in the city after the cleveland massacre. standard oil closed down to avoid additional violence in the wake of the cleveland massacre.