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…showed last 75 words of 1217 total…social stratification, as well a monumental architecture. Bibliography Childe, V. Gordon. 1950 The Urban Revolution. Town planning review 21(1) The Mayan Class Structure http://home.eol.ca/~smithda/classstructure.html The Inca Empire http://www.crystal links.com/incan.html Morris, Craig and Adriana von Hagen. 1998 City and Countryside in the Inka In Cities of the Ancient Andes. Thames and Huson, New York, pg. 161-198 Sharer, Robert J. The Ancient Maya Stanford University Press, Sta ------------------------------------------------------------------------ **Bibliography**