3, during the korean war, truman relieved macarthur of command because of (a) cowardice, (b) insubordination, (c) military incompetence, (d) treason.
4. president eisenhower failed in his effort to negotiate a nuclear test ban treaty with the soviet union because of (a) growing concern about the "missile gap," (b) the shooting down of the u-2, (c) tension in vietnam, or (d) violence in the civil rights movement.