Why do Africans, and Latin America use U.S. Dollars? People use stable currencies with reliable, and predictable prices. The Euro being an important currency of modern economic trade would be a top contender for replacing the U.S. Dollar, and inflation shocks would be absorbed more easily as it would be dispersed more globally than locally like the U.S. For example, how Greece’s economy fell apart but countries like Germany essentially forced Austerity onto them, to keep global trade stable.