ppl say religion n nationality r two different things. further they say religion is personal belief of some1 to be followed in their own homes. but as a person ie by nationality, v r all indians. thus conversion of ppl from one religion to another does not affect our nationality. now the point is. think of jinnah who was hindu by birth. n he was misguided to b converted himself into muslim. subsequently, he realised his mistakes n wanted to reconvert to his original hindu religion. but during that time, the hindu religious leaders did not allow him to reconvert him to hinduism. this frustrated jinnah to a great extent. he was then instrumental to the creation of state called pakistan in the name of religion. imagine if that jinnah had been allowed to b hindu by the leaders then, the partition wud nt hv taken place. so ultimately change of religion ultimately led to change of nation and thus conversion and nationality r invariably related terms n cant b separated.