The national anthem of the United States, "The Star-Spangled Banner," was written by Francis Scott Key. He penned the lyrics in 1814 after witnessing the British bombardment of Fort McHenry during the War of 1812. Inspired by the sight of the American flag, or the "star-spangled banner," flying triumphantly after the attack, Key's poem expressed both resilience and patriotism. The song was set to the tune of a popular British song and officially became the national anthem in 1931. Today, "The Star-Spangled Banner" serves as a symbol of American pride and unity, commonly performed at public events and ceremonies.