1919 is the answer ldslah;lghlgjn/emn/
They look at their backgrounds before deciding what to do with them
The correct answers are working on a history test and solving a sudoku puzzle.
The reason for this is because you can listen to music and don't need to be explicitly conscious - imagine drifting away in thoughts while you listen to music, or do something completely unrelated.
The same goes for riding a bike. Once you know how to ride a bike and know the path where you're going, your attention and explicit consciousness can be allocated somewhere completely else :)
The correct answers are the middle two - because of them require you to be present and attentive of the situation and what you have to do.
The southern economy and way of life would be destroyed without slave labor.
The answer to that is disease spreading rampantly
