General Andrew Jackson's outnumbered force crushed a British invasion at New Orleans, in a battle fought after the peace treaty had already been signed.

Word of the Treaty of Ghent's ratification and the Battle of New Orleans spread across the Atlantic, closing out the War of 1812 in the public mind.

The Congress of Vienna places the Principality of Monaco under the protection of the Kingdom of Sardinia, restoring the Grimaldi family's rule after French annexation.