Alexander the Great lives, or Alexander the Great goes west? Anyway, how about this Alexander the Great setting:
- Alexander the Great returns to Babylon from India (OTL).
- Alexander the Great gets ill, but fortunately for him a Persian healer just happened to come to Babylon and saved him. Alexander farther encourages the mixing of Greek and Persian cultures, and officially declares the Alexandrine Empire. He then decides that India is not for him and goes off to conquer Carthage (historically, he did plan, after his retreat from India, to attack Carthage because its Phoenicean).
- Alexander DOES die eventually, but not before adding North Africa, Italia, Massila and Iberian Mediterrnean coast to his empire. After that the reign of Phillip II begins, and capital is officially moved to Alexandria.
- News of Alexander get as far east as China. The threat of Alexandrines causes India to be firmly united, and China begins to cautiously start expanding southward and westward.
- In Europe, Alexander and Philipp II begin a tradition of creating allied kingdoms outside of their territory, primarily in Gaul and Scythia. But the bid leads only to trouble, as Vercingrotix unites the Gauls, and Scythian Horde begins to threaten the Alexandrines in the Balkans. Several Germannic kingdoms arise.
- After Carthage fell, a group of refugees led by Hannibal fled south, to Western Africa, where the Kingdom of Ghana is established. After Rome fell, its people too fled - to Britannia.
How's that?