Identify the role of the Italian city-states in the European Commercial Revolution.
A. Italian city-states fueled the European Commercial Revolution by participating in the Middle Ages.
B. Italian city-states fueled the European Commercial Revolution by participating in competition among themselves that often resulted in war.
C. Italian city-states fueled the European Commercial Revolution by participating in trade and developing new banking practices.
D. Italian city-states fueled the European Commercial Revolution by becoming art patrons and funding the development of Renaissance art.