I believe there are lots of reasons why the Roman Empire declined but the 3 most important ones are, Government corruption and political instability, Invasions by Barbarian tribes, and The rise of the Eastern Empire, but the one I think is the most important is the first one reason.
The fall of Ancient Rome started from about AD 190. The Roman Empire was attacked by tribes such as the Goths and the Vandals. Civil wars in parts of the empire further weakened the rule of Rome and respect for Roman law dwindled as a result.
Answer:
These are the principles of popular sovereignty, limited government, separation of powers, checks and balances, judicial review, and federalism
Explanation:
False
This is because it was not a fast thing that occurred. It took many time and lives to do this and some would argue Afghanistan is still not at peace.