Final answer:
The Congress of Vienna's main purpose was to plan the future of Europe after the Napoleonic Wars.
Step-by-step explanation:
The main purpose of the Congress of Vienna was to plan the future of Europe after the Napoleonic Wars. It aimed to restore stability and establish a balance of power among the European nations. The congress was convened in 1814-1815 and attended by representatives from major European powers to negotiate territorial boundaries, redraw national borders, and establish a new European order. The goal was to prevent further conflicts and maintain peace in the region.
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