References
Images
Header Image used under cc license: http://www.flickr.com/photos/lukeredmond/886434683/
Mayan zodiac used under cc from http://commons.wikimedia.org/wiki/File:Mayan_Zodiac_Circle.jpg
Civilizations map on Content page created by Abi Oshins. It's protected under cc
Mexico Map (Aztec page) used under Fair Use from http://www.slideshare.net/vault415/early-american-civilizations-mayans-incas-aztecs
Aztec Social Class image used under fair use from http://www.slideshare.net/vault415/early-american-civilizations-mayans-incas-aztecs
Aztec religion image used under fair use from http://mrsbergsclass.com/mayanincanaztec.html
Machu Picchu image used under cc license from http://commons.wikimedia.org/wiki/File:Peru_Machu_Picchu_Sunrise_2.jpg
Llamas and Quechua woman used under public domain from http://commons.wikimedia.org/wiki/File:QuechuaWoman.jpg
Mayan Location map used under cc from http://en.wikipedia.org/wiki/Maya_civilization
Mayan Class image used under fair use from http://www.middletownk12.org/leads/files/The%20Maya%201.pdf
Mayan pyramid used under cc from http://commons.wikimedia.org/wiki/File:Belize-tikal.jpg
Mayan blood letting used under public domain from http://commons.wikimedia.org/wiki/File:Yaxchilán_lintel.jpg
Video
Inca creation video from YouTube, used under standard YouTube License: http://www.youtube.com/watch?v=75kDb2OqBWI
Audio
Voki character created by Abi Oshins using www.voki.com under Fair Use