What are lines one through four in the song “ the star spangled banner “ expressing to the reader

The stanzas recount the Battle of Baltimore, a days-long siege between British and American forces.

Explanation:

Like so many famous songs of yore, "The Star-Spangled Banner" started as a poem, called “The Defence of Fort McHenry.” It was written by Francis Scott Key in 1814 during the War of 1812. The stanzas recount the Battle of Baltimore, a days-long siege between British and American forces.

Explanation:

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