1. US history 1920
... main reasons was the automobile. The automobile had a profound impact on the United States. It brought superhighways, paved bridges, motels, vacations, suburbia, and the opportunity to trade this money making machine with other countries that had economic growth. Assembly lines became more efficient, thus allowing cars to be made more cheaply and allowing prices of cars to drop, enabling more Americans ... individual, but both aware of the need for trading outside our nation in order to become a superpower. During the second half of the nineteenth century, the United States experienced ...
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- Grade Level: High School