Timeline of what would have happened if the Western Roman Empire never fell.
285 AD - The Roman Empire began to be administered by two separate Imperial courts, one in Rome and one in Constantinople.
346 AD - The Roman army passes a new military law, that to join the army one must have been born 170 miles within the borders of the Empire.
395 AD - The Western Roman Empire is at its greatest extent thanks to holding barbarians back at the borders.
434 AD - The Western Roman Empire crushes Attila The Hun's plans of invading Rome's northern provinces.
451 AD - The Empire expands into the once 'un-conquerable' lands of Germania, mostly Frisii and Suebi.
498 AD - Economic and population booms start across the Empire. Many previous citizens of the Western Roman Empire move back to Rome from Constantinople.
515 AD - The Western Roman Empire pushes and eventually border the Eastern Empire's eastern and northern borders.
561 AD - Tensions rise between the Western and Eastern courts.
593 AD - War breaks out between the East and West.
608 AD - The Western armies capture Constantinople. The East and West are reunited.
698 AD - The now reunited Roman Empire pushes it's borders as far east as Transoxania.
745 AD - Rome colonizes India and sets it's sight on China.
821 AD - Rome colonizes China.
904 AD - Rome colonizes Russia and dominates Eurasia.
? AD - God knows.