The answer is: Presidents
<span>Automobiles were luxury items owned by a few until the idea of interchangeable parts came along which helped with the formation of an assembly line. This made making cars faster, which means there were more of them and were easier for less rich people to get.
Hope this helps :)
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The first major movement to bring about a great amount of productivity was the start of the Cottage and Guild Industries. These needed human labor and by placing people doing similar tasks and the next task in another group's hands not far away helped to speed things up. One person wasn't doing everything.
