@41995660 
>No economic and governance system besides Capitalism (as part of a Republic) has ever been effective for any lengthy period.

Almost all empires are about the same. We're still well within our allotted ~250 years.

Please consult Sir John Glubb's "Fate of Empires." It's a 26-page giblet from the late '70s with some insight. http://people.uncw.edu/kozloffm/glubb.pdf