Citations

http://ezinearticles.com/?Who-Built-the-Great-Wall-of-China?&id=782996

http://www.uwgb.edu/dutchs/westtech/xmongol.htm
 
http://www.chinaculture.org/gb/en_aboutchina/2003-09/24/content_22644.htm

http://www.wsu.edu/~dee/CHPHIL/CONF.HTM

http://en.wikipedia.org/wiki/Gautama_Buddha

http://library.thinkquest.org/12255/library/dynasty/sung.html

http://library.thinkquest.org/12255/library/dynasty/tang.html

http://www.mnsu.edu/emuseum/prehistory/china/early_imperial_china/han.html

http://www.mnsu.edu/emuseum/prehistory/china/early_imperial_china/han.html

http://www.mnsu.edu/emuseum/prehistory/china/early_imperial_china/han.html

http://www.chinahighlights.com/greatwall/