Original sentence: "  The Hindustani vernacular became an expression of Indian national unity during the Indian Independence movement, and continues to be spoken as the common language of the people of the northern Indian subcontinent, which is reflected in the Hindustani vocabulary of Bollywood films and songs.According to the Concise Encyclopedia of Languages of the World, "Hindustani as a colloquial speech developed over almost seven centuries from 1100 to 1800.The Muslims conquered northern India from the 10th to the 13th centuries and settled down in the country, bringing with them their Persian language and culture.This mixing of cultures provided the contact situation for the emergence of Hindustani as a lingua franca
Edited sentence: The Hindustani vernacular became an expression of Indian national unity during the Indian Independence movement, and continues to be spoken as the common language of the people of the northern Indian subcontinent, which is reflected in the Hindustani vocabulary of Bollywood films and songs