I got bored, so I even did a small map with an explanation...
Basically, this represents a world in 1AD where Carthage defeats Rome. Carthage dominates North Africa and Spain, its main recruiting grounds for soldiers. The cities of Sicily and South Italy retain official "independence" but in reality are pure Carthaginian vassals, ready to jump at the merest hint from their Phoenician overlords. Carthage also boasts colonies in Istria, Dalmatia, and a couple of the Greek Islands.
These colonies are sustained by the strong alliance Carthage holds with the Kingdom of Macedon. Aided by Carthaginian wealth, Macedon has been able to establish control over most of Greece, and pushed its northern frontier up to the River Danube. In a short, violent war, a Macedonian-Pontic alliance destroyed the Kingdom of Pergamon, leaving Pontus in control of the Anatolian interior, and Macedon dominating the western coastline. As a reward for support, the Macedonians allowed the Carthaginians to set up colonies on several Greek islands, which have now adopted a vibrant half Hellenic, half Punic culture.
Macedon's main rival for power in the region is Ptolemaic Egypt, which holds Crete, and is effective master of Rhodes. The Egyptians also maintain the independence of several Greek city states such as Sparta, and more notablly, Athens. Athens may not rank herself a great power anymore, but the alliance between her and Alexandria has led to Athens becoming the greatest centre of learning in the world. More importantly, democracy survives in Athena's city, and is beginning to influence their Ptolemaic allies, at least at a local level...
Egypt currently maintains a precarious control over Judea, but this is constantly threatened by her major rival for power, the Seleucid Empire, (or as it is generally known to the Egyptians due to influence from their Jewish subjects "Babylon"). The Babylonians dominate Syria, Cilicia and Mesopotamia from their twin capitals of Antioch and Seleucia. They are loosely allied to Macedon against Egypt, but their main concerns are with maintaining the Empire, a blend of Mesopotamian, Persian, Macedonian and Jewish influences. To the east they are in turn menaced by Parthia, but the threat has never been strong enough to overturn Seleucid millitary power.
In Italy, order is maintained by the Republic of Rome, which dominates the centre of the peninsula. The Romans, despite the crippling peace terms of 209BC, were able to retain control over part of Italy, and two centuries later are flourishing. Rome remains a true Republic, influenced greatly by Athens, and is very hellenized. Nonetheless, her millitary prowess remains undiminished, and Roman soldiers can often be seen in the armies of their main ally, Carthage.
Thoughts?