Which line from "What to the Slave is the Fourth of July?” supports Douglass’s claim that the Fourth of July is not a cause worthy of celebration by all?

answer: the gettysburg address is a speech delivered by abraham lincoln at the november 19, 1863, dedication of soldier’s national cemetery, a cemetery for union soldiers killed at the battle of gettysburg during the american civil war.

explanation:

the underlined phrase is an example of : understatment