Since most americans are descendants of immigrants, why do you think discrimination against today's immigrants persists?

after the spaniards introduced horses to plains native americans, the lives of the tribes changed. tribes became less settled and sedentary. the horse allowed them to hunt animals such as bison or buffalo, and, instead of staying in one place, tribes began to be nomadic.

mapmaking. cartography had been an art form for many years, but it wasn’t until the renaissance when ptolemy’s ancient system of latitude and longitude was rediscovered that mapmakers were able to make surprisingly accurate and useful maps.