What practice allowed people to gain forgiveness by giving the catholic church money?

The practice called an Indulgences.  Selling of forgiveness by the Catholic Church. It was common practice when the church needed to raise money. The practice led to the Reformation. Tetzel was one of the priest selling indulgences. Simony is what I called when a bishops selling positions in the Church. 

well the unjest treatment and discrimination did get faced by the idians and soldiers

explanation:

this can !    

- jack watson