Why was the 54th Massachusetts regiment famous? Select the answer that fits the best. It wasn’t African-American unit that was noted for heroism in battle, it was a union replacement unit that turned the tide at the battle of Gettysburg, it was composed of men under the age of 20, it was the only integrated unit during the Civil War

The answer that fits the best is: It was an African-American unit that was noted for heroism in battle.