Sources

https://www.google.com/search?q=church+hierarchy+during+the+middle+ages&rlz=1RMBKJA_enUS573US573&hl=en-US&espv=1&source=lnms&tbm=isch&sboxchip=Images&sa=X&ei=yA4
OU7faLc_xoAS8wIGQCg&ved=0CAkQ_AUoAA&biw=1024&bih=672#imgrc=_o6zhIYF4wApDM%253A%3BK8CC2Dw6IGC0QM%3Bhttp%253A%252F%252Fwww.bibletruthonline.com%252F
uploaded_images%252Frcstruc-768725.gif%3Bhttp%253A%252F%252Fwww.bibletruthonline.com%252Flabels%252FChristian%252520History.html%3B459%3B328

http://www.studymode.com/essays/Roman-Catholic-Church-Influences-On-Europe-102036.html

http://theologyexchange.com/2013/06/03/what-is-the-role-of-the-church-in-society/

http://www.historicimpressions.com/Medieval.htmo