
What is the best division possible to get three roman empires and to get the central one to survive?
My idea is to leave the Persians to the Eastern one and the Low Danube (to lift the burden from the Central Empire).
The Western Empire would hold the Briton border and the Rhine, along with the area comprised between the sources of the two rivers.
The Central Empire would ward the Danube and the Berber tribes on the South.
Any suggestion?