Abe most likely said that, because if he said slavery was wrong at the time people would disagree and go against him which is very sad but true.
Supreme court justices, The president nominates an individual for a judicial seat. The nominee fills out a questionnaire and is reviewed by the Senate Judiciary Committee.
The viking was the first spaceship to land on Mars.
During the campaign for President in 1988, George Bush promised that he would "not raise taxes," since this was, and continues to be, one of the most prominent talking points in Republican politics.