The slave picture is from..
http://www.historylink102.com/rome-pic/roman-pesant.jpg
The Video is from...
http://www.youtube.com/watch?v=9RbDomgdsGM
The Cartoon Picture Was Taken From...
http://www.cartoonstock.com/newscartoons/cartoonists/rma/lowres/rman699l.jpg
the tempal of sumer picture was taken from...
http://www.iranian.com/History/2005/March/Gutians/Images/gutians_sumer_ziggurat1a.jpg
The Picture of an Ox is from...
http://upload.wikimedia.org/wikipedia/commons/3/38/NSRW_Musk-Ox.png
This Picture Was Taken From...
http://www.le.ac.uk/ar/stj/Dura%20dawn%20view%20sm.jpg
Special thanks to...
Google
Youtube