Reasons why many post-classical hindus in south asia resisted conversion to islam

Buddhism began to decline as Buddhists were attracted to Hindu and Muslim communities. Turkish invaders destroyed Buddhist shrines and stupas; and in 1196 Muslim forces destroyed the city of Nalanda and destroyed a leading Buddhist school. Buddhist libraries were destroyed and monks were either killed or exiled. As a result, Buddhism became a minor faith in the land of its origin.

Not sure this is a hard one huh