"What was the significance of Aryan and other tribal migrations on the Indus Valley?" writen in a story poem or song

The language, religious beliefs, and social customs of the Aryans influenced the people of Harappa and Mohenjo-Daro. For example, many of the Harappans learned about Hindu beliefs and the caste system.

Explanation:

a phrase from a poem by ralph waldo emerson about the battle of lexington and concord. emerson's words read, “here once the embattled farmers stood / and fired the shot heard round the world.”