Alexander Empire

Alexander the Great died at age 86 and unified most the known world including Rome Republic, Southern Gaul, Hispania, and Carthage. He solidified the political structures and undertook transportation constructions to cement the Hellenistic Empire that spanned from Atlantic Ocean to Indian Ocean. The fusion of Greek and Persian cultures was more successful than that in the OTL. His success resulted in almost two millenniums of an imperial dynastic system (similar to that in China) in a unified Europe, North Africa and Southwest Asia.

The unified political and cultural system strengthened the Empire to resist threats and rebellions. Economy was more active because trading was protected within the empire. However, the unipolar structure also diminished regional diversity and damped cultural development.

Period of conquests
Conquests of the east Conquests of the west