B) Shared their dislike of being ruled by foreign emperors
Explanation:
During the Napoleonic wars, Germany and Italy were only regions, not unified, and were consisted of numerous small states on those territories. Understandably, these small states were not able to stop Napoleon and he conquered them easily. Both of these regions despised the fact that they are ruled by foreign force, and they saw that they should act together in order to be stronger. This prompted the rise of nationalism, and there were movements and politicians that were giving their best that the small states unite together and form strong nations. Eventually this happened, and both Germany and Italy became nations that were strong in every sense of the word.
