How did Spain's colonies in the New World change the face of what would become American?

the Spanish Empire would expand across the Caribbean Islands, half of South America, most of Central America and much of North America (including present day Mexico, Florida). For the most part, treated the Native Americans poorly. The Spanish were interested in the riches of the Americas, and they had no problem in forcing the Native Americans into slavery so they could mine the gold and the silver for Spain. The Spanish wanted to convert the Native Americans to Christianity.