What were the two main religions in India at the time of guru nanak's birth?

At the time of Guru Nanak's birth in 1469, the two main religions in India were Hinduism and Islam. Hinduism was the predominant faith, characterized by a diverse array of beliefs and practices, while Islam was spreading rapidly in the northern regions due to various invasions and the establishment of Islamic rule. Guru Nanak's teachings sought to bridge the gap between these two religions, promoting a message of universal brotherhood and devotion to one God.