The three Native American tribes "in the area when the first Europeans came" were the Taino, the Lucayans (the Bahamas) and the Nepoya and Suppoya. The three Native American tribes made up the Arawak people who were some of the Indigenous people of the West Indies. For more information, check out http://en.wikipedia.org/wiki/Arawak_peoples#First_European_encounter.
Mohegans (new England area),Croix (Pennsylvania and Mass. region),The ones that came before Columbus, were the Norse, Viking people. Then, when Columbus and the spanish Cortez came, they conquered the Aztec, and the Incas.