Answer: He participated actively in the european Protestant Reformation, which involved Western Christianity opposing to the Roman Catholic Church due to political and religious views.
Step-by-step explanation:
John Calvin was a french theologian in the 16th century that created a lot of controversy supporting the protestant movement, he was named minister of a church of French refugees and in the year of 1541 he was invited to lead the church of the city. The landmark text Institutes of the Christian Religion was published by him, to standardize Protestantism and its theories.