not sure if i should post here
but i was thinking what if the empire split north/south instead of east/west
lets say the south has its capitol at Carthage and Spain is included to the south,
with the border at present day France/Spain border in the west with the border in the east between Syria and Anatolia(turkey)
sicily, mallorca and cyprus is part of the south
crete, corfu, corsica/sardinia north
and so on
would they have a better of worse change of survival (as long as possible) and how would the world look like if they did that ?