From 1206 onward a series of Turkic Islamic invasions based from modern day Afghanistan and Iran conquered massive portions of Northern India, founding the Delhi Sultanate which remained supreme until the 16th century. The Delhi Sultanate introduced Islam to the conquered populations for the first time. Native religions fared differently, Buddhism declined in South Asia vanishing in many areas but Hinduism survived and reinforced itself in areas conquered by Muslims. In the far South the Kingdom of Vijanyagar was not conquered by any Muslim state in the period. The turn of the 16th century would see the rise of a new Islamic Empire – the Mughals and the establishment of European trade posts by the Portuguese.