Our American Continet (North-Central- South) is the home of thousands of cultures made of ancient and recent civilizations. Among the ancient cultures in North America are the Hopi, Navajo, Apache and hundreds of otherss. The great cultures of Central America and the Caribbean such as the Mayan, Aztec, Toltecs, Taino, Kunan and many South American cultures such as the Inkas, Aymaras, Chankas, Chimu, Mapuche, Guaranies, and hundred others all throughout the Amazon area.

During the past 400 years new cultures have arrived to the Americas, adding to the richness in traditions and languages. People from all over the world have migrated to the "new world" from Europe, Africa, Asia and Oceania.

Resources:

Living In A Multicultural America
http://www.npr.org/templates/story/story.php?storyId=97855420

Multicultural America
http://www.everyculture.com/multi/