<span>the nation in Europe that was the greatest obstacle to both German and Italian unification was : B. Austria
back then, the Austrian empire was arguably the most dominant power within the Europe continent. They opoose the idea of the unification because they see them as a potential threat for their kingdom</span>
Answer:
The South feared that the North would take control of Congress, and Southerners began to proclaim states' rights as a means of self-protection.
Explanation:
It did complex calculations needed to accurately fire artillery.