Welcome to the Dark Ages!
The beauty of the Greek and Roman Empires is long gone! The ruling system has collapsed and taken with it stable gevernment, schools, libraries, a uniform currency, and a common language. Barter now replaces money as the major purchasing system. Cities and towns have been destroyed and transportation between them is extremely difficule, if not impossible.
This era is not without gevernment though. The Roman Catholic Church remains a strong unifying force. In addidion, medival civilization clings to a very simple form of government called " feudalism."