Citations

Works Cited

The Inca Empire
Cartwright, M. (2014, September 15). Inca Civilization. Retrieved from https://www.ancient.eu/Inca_Civilization/.
Inca. (n.d.). Retrieved from http://projectshum.org/society/history/inca/.
Picasa. (2013). Retrieved from https://commons.wikimedia.org/wiki/File:Ruins_of_Machu_Picchu_Inca_empire_Peru.jpg

Agricultural Innovation
(2014). Retrieved from https://commons.wikimedia.org/wiki/File:Incan_aqueduct_at_Tipon._Cusco,_Peru.jpg

(2010). Retrieved from https://commons.wikimedia.org/wiki/File:Stipagyneroides.jpg

Meier, A. (n.d.). Grass Cords. photograph, Washington DC.
Meier, A. (n.d.). The Inca Rope Bridge. photograph, Washington DC.

Smithsonian's National Museum of the American Indian

(2005). Retrieved from https://commons.wikimedia.org/wiki/File:National_Museum_of_the_American_Indian.jpg