POD: Alexander the Great's "Indian Campaign" works better than planned, securing a strong border along the Indus River, thus butterflies away his death on 11 June 323 BC, aged 32 in Babylon. He is able to live an extra 20+ years, seeing his first son, reach the age of adulthood as well as fathering more children ranging from 1 to in their 20s, with loyal family generals and politicians, Alexander, dies happily knowing his empire, will survive.
With India surrendering to the Greeks and blockaded from going West, they turn their attention East, securing an alliance with the Ancient Chinese states. The Great Greek Empire, also hampers Romes attempts at conquering the Balkan peninsula resulting in them concentrating in the Iberian peninsula and North Western Africa, having been blocked from Northern Europe by the Celtic-Germanic-Gaul alliance. With Three strong rivals, the Hunns occupy OTL Russia
Religion: No Islam, Alexander suppresses this religion, how ever is not able to stop a Greek style of Judaism from forming, linking with themes from ancient Greek polytheism, similar also to the Celtic, Germanic, Gaul and Roman States, that mix their polytheism with the teachings of Judaism. With a strong Indian and Chinese unity, the world sees a hybrid of Asia's three ancient religions of Buddha, Confucianism and Hinduism.