Visual sources:
HTTP://WESTERLUND10.WIKIS.BIRMINGHAM.K12.MI.US/JOEY+G.+ANCIENT+CHINA+WIKI+TERMS
HTTP://JESSEANCIENTCHINAADVENTURE.BLOGSPOT.COM/2015/11/ANCIENT-CHINA-SOCIAL-HIERARCHY.HTML
http://personaltao.com/teachings/questions/what-is-yin-yang/
https://apworldhistorywiki.wikispaces.com/Post-Classical+India+2
https://en.wikipedia.org/wiki/History_of_science_and_technology_in_the_Indian_subcontinent
http://jesseancientchinaadventure.blogspot.com/2015/11/ancient-china-social-hierarchy.html
http://www.thinglink.com/scene/569088615812956162
https://www.pinterest.com/pin/349732727289323168/
https://www.theodysseyonline.com/things-you-hear-if-youre-math-major
https://artdragee.wordpress.com/2013/03/24/colosseum-rome/
HTTP://WESTERLUND10.WIKIS.BIRMINGHAM.K12.MI.US/JOEY+G.+ANCIENT+CHINA+WIKI+TERMS
HTTP://JESSEANCIENTCHINAADVENTURE.BLOGSPOT.COM/2015/11/ANCIENT-CHINA-SOCIAL-HIERARCHY.HTML
http://personaltao.com/teachings/questions/what-is-yin-yang/
https://apworldhistorywiki.wikispaces.com/Post-Classical+India+2
https://en.wikipedia.org/wiki/History_of_science_and_technology_in_the_Indian_subcontinent
http://jesseancientchinaadventure.blogspot.com/2015/11/ancient-china-social-hierarchy.html
http://www.thinglink.com/scene/569088615812956162
https://www.pinterest.com/pin/349732727289323168/
https://www.theodysseyonline.com/things-you-hear-if-youre-math-major
https://artdragee.wordpress.com/2013/03/24/colosseum-rome/
Written sources:
https://app.schoology.com/course/635664571/materials/gp/829895383
https://app.schoology.com/course/635664571/materials/gp/829895383