What was a key outcome of the Congress of Vienna?

The Congress of Vienna, held from 1814 to 1815 after the Napoleonic Wars, aimed to restore stability and order in Europe. The primary goal was to create a balance of power that would prevent any single nation from becoming too dominant, which had been a significant issue during Napoleon's rule. As a result, the Congress laid down a framework for a long-term peace plan for Europe, with the intention of resolving territorial disputes and establishing a concert of Europe among major powers to manage affairs peacefully.

This focus on diplomacy and collective security among European nations contributed to nearly a century of relative peace, known as the Concert of Europe, until the outbreak of World War I. The agreements reached at the Congress, such as the redrawing of borders and the restoration of monarchies, were designed to maintain stability and cooperation, solidifying the significance of this outcome in European history.

In contrast, the other options do not accurately reflect the effects of the Congress. While the Congress did not propose a new system of democratic governance, it instead reinforced monarchical rule, focusing on traditional power structures. The spread of communism occurred much later in the 19th century and was not a result of the Congress's actions. Additionally, while military interventions occurred