Reminds me of a book that came out some time ago; Are We Rome, by Cullen Murphy, http://www.valuewalk.com/2016/02/collapse-of-the-roman-empire/?utm_source=mailchimp&utm_medium=email&utm_campaign=EMAIL_DAILY&utm_content=quick_link&utm_source=ValueWalk+Newsletter&utm_campaign=4e1fd879c5-%3DUTMDaily&utm_medium=email&utm_term=0_299e40291b-4e1fd879c5-50168581&mc_cid=4e1fd879c5&mc_eid=cffe07e91b