When did Islam start in India?
Many believe Islamic influence spread in India mainly during the reign of the Mughal Empire, which dominated from around the 13th to 19th century. The Mughals and their religion had a significant impact on India, converting many Hindus to Muslims and building unique architecture, the most notable example being the Taj Mahal.
However, some historians also believe that although the Mughal Empire was the main source of Islam's spread through India, the Islamic religion was first introduced by Arab traders in the 7th century even before the Muslim invasions of India. Arab merchants had trade relations with India very early on, and brought ideas of their Islamic religion along with their goods.