Final answer:
Hellenistic culture arose from the blend of Greek, Egyptian, Indian, and Persian cultures following Alexander the Great's conquests, with significant cultural exchanges and influences between these civilizations.
Step-by-step explanation:
The cultures that blended with Greek culture to form the basis for Hellenistic culture are Egyptian, Indian, and Persian. The Hellenistic period was characterized by the cultural blending that followed the conquests of Alexander the Great. He founded numerous cities, spreading Greek culture across the former Persian Empire, where it mixed with local cultures. In Egypt, the long rule of the Ptolemaic dynasty resulted in a cross-fertilization of Greek and Egyptian artistic and religious traditions. Indian culture interacted with Greek thought thanks to the creation of the Indo-Greek Kingdoms, where Greek and Indian practices combined. Meanwhile, the Persian influence persisted from the earlier Achaemenid Empire and continued under the Seleucid Empire, which ruled over a significant portion of the former Persian territories.