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Because Congress made a law in 1931 declaring it to be so.
The Star Spangled Banner was only one of several equally-prominent US patriotic songs until 1889, when Secretary of the Navy Benjamin F. Tracy issued a general order that it be played at the raising of the flag on US Naval ships and shore stations. Then in 1916 President Woodrow Wilson ordered that it be played "on appropriate occasions" throughout the US Military. But only in 1931 was it officially elevated over other patriotic tunes for civilian use.
The custom of playing The Star Spangled Banner before every Baseball game started during World War Two.
What else can I help you with?
What is the name of USA's national anthem?
The national anthem of the USA is "The Star-Spangled Banner."
What is the title of US' national anthem?
The Star Spangled Banner is the US national anthem.
What is National Anthem of the Unites States?
The Star Spangled Banner
When Didi the star spangled banner become your national anthem?
The "Star-Spangled Banner" was adopted as the national anthem of the United States in 1931.
How many decades has the star spangled banner been the official national anthem?
9 decades the star spangled banner has been in the USA.
When did the Star Spangled Banner song become the US national anthem?
On March 3, 1931, after 40 previous attempts failed, a measure passed Congress and was signed into law that formally designated “The Star-Spangled Banner” as the national anthem of the United States.
What is usas national anthem?
The Star Spangled Banner.
What is your anthem?
The Star Spangled Banner is the United States' national anthem.
What was the national anthem before the star spangled banner?
there wasn't one before its just the star spangled banner
What national anthem does the US have?
duuhhh! star spangled banner!
What is the current name of your national anthem?
The Star Spangled Banner
National anthem name in the US?
The Star-Spangled Banner.
