Why is it significant that “the star spangled banner” was written during a time of war

Since "The Star Spangled Banner" was written during a time of war, it was easier for others to understand and feel the emotions of the song. It also allowed the one who wrote the song to be able to convey their emotions into the song.

its about the war and describes wat the writer saw

no. but, i heard its a good book. you could look up the answers or summary on some website.