There is no options given but i'll answer. Henry Ford increased the wages so that workers can live in good conditions. Moreover that will encourage them to undergo every increase of working time. Eventually, they will buy the Henry Ford as well to be able to go to their work by car.
Therefore the answer would be the increase of wages.
Hope this helps !
Photon
3) Popular Sovereignty
4) Harriet Beecher Stowe (I don't know if this is the author you are looking for)
5) Uncle Tom's Cabin; or, Life Among the Lowly ( I don't know if this is the book you're looking for)
6) Free-Soil Party (Free Land)
7) Henry Clay
I hope I helped ^.^
I pretty shure its vicksburg
