How many Greek history have been different if Alexander had not existed?

If Alexander the great had not existed, Greek history would likely have unfolded quite differently, particularly in terms of the spread of Hellenistic culture. Without his conquests that united vast territories from Greece to India, the diffusion of Greek language, art, and philosophy may have been limited, potentially leading to a more fragmented and localized cultural landscape. The power dynamics in the region could have shifted, allowing other empires, such as Persia, to retain greater influence. Additionally, the absence of his military innovations and tactics might have altered the course of warfare in subsequent eras.