Question

What led to the shift of power away from Rome, the seat of the Catholic Church

Answer 1

After the Protestant Reformation, the Catholic Church felt the blow on the confidence in the church. The Protestants criticized many practiced the Catholics had like the distance the church held from the bible and the constant corruption by many popes who protected some powerful families. Even though the Catholic Church tried to make the counter-reform, many people left it for others.

Because of that power started to shift away from the Church and many countries had anti-church policies. 

Answer 2

The answer would be They lost all their allies and no one helped them so people started to leave....