What religion did hinduism absorb on the indian subcontinent

Hinduism is considered one of the oldest religions in the world. Western scholars regard Hinduism as a synthesis, or fusion, of various Indian cultures and traditions, with diverse roots and no stated founder. This synthesis is believed to have developed after Vedic times, between 500 BCE and 300 CE. Please give me the brailiest answer?

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“the iliad” (gr: “iliás”) is an epic poem by the ancient greek poet homer, which recounts some of the significant events of the final weeks of the trojan war and the greek siege of the city of troy (which was also known as ilion, ilios or ilium in ancient times).