The protestant reformation contributed to all of the following except a- a split in european christianity b-spread of protestantism through northern europe c- religious turmoil and wars between catholics and protestants d-the “mourning wars”

D - the ''mourning wars''

Explanation:

The Protestant reformation in Europe brought lot of changes with it. For starters, it managed to significantly lower the power of the Catholic Church, through splitting it and gaining lot of its followers. The Protestantism was a much more liberal type of Christianity which was not forcing the people to do certain things and to use the fear factor to control, which normally attracted the people and moved them away from the corrupt Catholic Church at that time. This led to wars between the Catholics and the Protestants which often were very long and bloody. One thing that the Protestantism did not contributed to are the ''mourning wars'', as those are wars between the US states and the Iroquois Confederacy which had nothing to do with religion.

c holding free elections