The central issue addressed at the Congress of Vienna in 1814-1815 was the restoration and restructuring of Europe following the defeat of Napoleon Bonaparte. The Congress aimed to establish a balance of power to prevent future conflicts, preserve monarchies, and contain the spread of revolutionary movements. Representatives from various nations negotiated territorial adjustments and alliances, seeking to create a stable political landscape. The decisions made during the Congress had long-lasting implications for European diplomacy and international relations, establishing a framework that would influence European politics for decades.