John Winthrop’s Speeches- what does posterity mean?

Don’t mind the already marked answer but taking it now

Which statement about african americans during the civil war is true? o a. they were granted the vote in the north. o b. they were allowed to attend northern universities. c. they were given deeds to southern plantations. o o d. they enlisted in the union army.

Name 3 significant impacts of the tet offensive on the outcome of the war, it's participants, or the public image of the war.