What is the name of the national anthem?

Why this is the answer

The national anthem is "The Star-Spangled Banner". Francis Scott Key wrote the words during the War of 1812, after watching a battle through the night and seeing the American flag still flying over the fort at dawn. "Spangled" describes the stars shining on the flag, and a banner is a flag, so the title simply means the star-covered flag. Memory hook: the anthem is a song about the flag surviving a battle.