because the bishops were politically very important, whoever controlled them had a great deal of power. THIS OBVIOUSLY CAUSED A STRUGGLE FOR POWER BETWEEN POPE GREGORY VII AND EMPEROR HENRY IV. THESE CONFRONTATIONS WERE FINALLY RESOLVED AT THE CONCORDAT OF WORMS, WHERE IT WAS DECIDED THAT THE POPE ALONE COULD NAME A BISHOP, BUT THE KING HAD THE POWER TO VETO THE APPOINTMENT.
The enlightenment was basically the "Age of reason" it was the movement. After the war(s), the people wanted like a revolution or independence. Anything that deals with peace or better economy.
