"The Star-Spangled Banner" has been the national anthem of the United States since 1931. This patriotic song has become an important part of American culture, and is celebrated at various events across the country. There are several synonyms that can be used to refer to this historic anthem, such as "the American national anthem", "the anthem of the United States", and "the national hymn". Additionally, it is sometimes referred to by its original name, "Defence of Fort M'Henry". No matter what name it is called by, "The Star-Spangled Banner" represents the spirit of American pride and perseverance.