Answer:
Thomas Jefferson 1801-1809 3rd president
John Quincy Adams 1825-1829 6th president
William Howard Taft 1909-1913 27th president
Jimmy Carter 1977-1981 39th president
Explanation:
Thomas Jefferson's idea of how slavery could be tolerated in a nation that trumpeted liberty had to do with the fact that he felt it was a "necessary evil" that must continue long enough for the US to develop properly. He felt as though blacks were inherently inferior and therefore needed "guidance".
Whatever you want it to be