Mediterranean Triple Alliance

Intro
18 centuries between the Hellenistic Age and Age of Enlightenment condense into 6 centuries of continued progress

Though the Points of Divergence are caused by a science fiction (robot from the future sent to the past) and the Information Age of this alternate timeline is even more fictional, the alternate history until the information age (minus the secret history of its cause, which might be turned into a webcomic or novel) is plausible--I hope.

Points of Divergence
Alexander the Great died early in the Battle of the Persian Gate, causing a retreat of his army to friendly territory in Greece and previously conquered Persia.

Phoenician naval technology experienced increased innovation and invention in Tangier during the 6th through 3rd centuries BCE.

The Maya experienced unprecedented growth and prosperity thanks to the innovations of a few siblings and their descendants, starting in the early Classical Period in Tikal.

Rather than collapse from changes in weather starting in 536 CE, the Moche civilization adapted and morphed into an empire akin to the Inca before transoceanic exchanges.

Corruption during the Eastern Han Dynasty was curtailed by competent emperors and lasted through three more emperors before being usurped by a military aristocracy in the northwest, transitioning into the Tang Dynasty.

Major Ripple Effects
Tarantine aristocrats successfully plotted to hand Taranto over to Rome in 282 BCE.

Greece and Carthage successfully defended Sicily from the Romans.

Phoenicia, Macedonia, and Rome joined forces to expand and thrive without stepping on each others toes in 199 BCE. This becomes 1 Anno Imperium in the new timeline.

The Roman Republic remained a de facto oligopoly of the senate with landowners technically allowed to vote democratically.

Rome focused on conquering the Iberians, Gauls and Berbers with small help from Greece and Phoenicia.

Jeshua the carpenter was executed by the pharisees in the mostly independent client state of Judea.

Pompeii and Herculaneum evacuated ahead of the eruption of Mt Vesuvius.

Vaccines discovered in Ptolemaic Egypt in the 1st century CE (3rd century AI) eventually saved the lives of the important people (government, aristocracy, military, gentry) and consequently saved the lives of many indigenous populations of the New World

Seeking riches from fabled islands. Phoenician explorers landed on what are called the Virgin Islands in OTL in 372 CE (572 AI). The transatlantic exchange between the Romans and the Maya occurred nearly two centuries later.

The economic boom of the 8th century AI brought technological advances to the Old World, triggering the Second Industrial Revolution.