Read the following paragraph and refer to the map of Europe after the Congress of Vienna. Then answer the question that follows. The delegates to the Congress of Vienna formed the Kingdom of the Netherlands by uniting the Austrian Netherlands and the Dutch Republic. They gave independence to Switzerland. They also formed a German confederation by uniting 39 German states. Which sentence best describes the effect of the delegates' actions on European geopolitics? A. France was effectively contained by strong neighboring powers. B. Prussia became the most powerful country after the unification of states. C. Russia was weakened by the containment of France. D. Switzerland was given more power than France.