"Rule Britannia" is a patriotic song that originated in the 18th century, written by James Thomson and set to music by Thomas Arne. It was first performed in 1740 as part of the masque "Alfred," celebrating Britain's naval power and national pride. The song has since become an anthem associated with British identity and maritime strength. The lyrics express the idea of British dominance over the seas, emphasizing themes of freedom and resilience. Over the years, "Rule Britannia" has been performed at various national events, including the annual Last Night of the Proms, reinforcing its status as a symbol of British heritage.