Was it fair or disrespectful to turn Native into Christianity? Would the Natives lose their beliefs?

I believe it was unfair to turn Natives in to Christians. A big part of the reason the Pilgrims came to the New World was for religious freedoms, right? It seems very wrong to force a different culture into believing something different and then shaming them (or worse) for not accepting the new religion.

I think that the younger Natives, after having been separated from their families and their culture, would definately lose their original spiritual beliefs since nobody was teaching them about it.

Explanation:

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.