The correct answer is:
B. It caused people to identify by nationality
The Commercial Revolution lead many feudal and local entities to be diminished or disappeared entirely, but some reinvented themselves to become absolutist monarchies and national states. This violent process contributed to the Wars of Religion.
It culminated in the Thirty Years War (1618–48), which began as a religious war but ended as a struggle for national superiority within the Holy Roman Empire, between German Protestants and their allies (Sweden, Denmark, France) and the Holy Roman Emperor and his Habsburg allies.
