[robinzfc]

> the Roman Empire lasted about 200 years.

The Roman Empire lasted about 500 years - from 31 BC to the fall of the Western Roman Empire in 476. If we include the period of existence of the Eastern Roman Empire it would be almost 1500 years - until the fall of Constantinople in 1453.

[JackFr]

And that ignores the five centuries of the Roman Republic, before the empire.