Our Economy is highly specialized. People work at jobs to provide products and services for some small and often distant market. Most of what we buy has come great distances and is a part of International trade. We rely heavily on oil, but don't produce or refine enough for our own country. In tougher times, people had to go back to using what was locally produced. Centuries ago, any imported item was very expensive.
Mass production and trade have built huge Economies, bringing us modern conveniences, and paying for...
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