Which event is associated with the War of 1812?

The event associated with the War of 1812 is the burning of Washington D.C. This event occurred on August 24, 1814, when British troops invaded and set fire to several important buildings in the U.S. capital, including the Capitol and the White House. This act was part of the broader conflict between the United States and Great Britain, which had many causes, including trade restrictions and impressment of American sailors. The burning of Washington D.C. stands out as a significant and symbolic moment in the war, showcasing the vulnerability of the young nation at that time and galvanizing American patriotism in response to foreign aggression.

The other events listed do not pertain to the War of 1812. The Battle of Gettysburg occurred during the Civil War, the Louisiana Purchase was a land acquisition that happened in 1803, and the signing of the Treaty of Paris refers to treaties that ended the Revolutionary War and the Spanish-American War, not the War of 1812.