Answer:
a) the effectiveness of mass production.
Explanation:
Henry Ford was the first car producer (Ford Industries) to use the assembly line, which allowed certain groups of workers to work on specific parts of the car, while simultaneously transferring the component throughout the groups to create a full car at the end. This allowed Ford to create large amounts of cars in short amount of time, decreasing not only cost of production, but also the cost to buy the car, further making the car more popular with the people. This cycle allowed for cheap cars, which in turn made Ford rich.
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William was a writer that posted a newspaper called "The Liberator". This was a abolitionist newspaper. He kept posting these until the end of slavery. The Lovejoy's also wrote things on slavery. Fredrick was the leader of the abolitionists he was a slave that had escaped from slavery and wrote a very important anti slavery writing. <span />
I believe it's the tenth amendment.
