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題目
Using the examples from the lecture, explain two ways the railroad system changed business in the United States.
部分原文:
Ok, so we’ve been talking about various factors that have changed the United States’ economy. One especially important factor is the development of railroads. When the railroad system expended to almost the US, it fundamentally changed the way business perform in this country.
For one thing, it expanded and the railroad enable companies to start selling their goods to all of the country. Since trains could now transport merchandise all over US, companies could now sell good to customers pretty much anywhere of the country.
For example. There was a big company that sold quartz. The company started in a big city. And before the development of railroad, the company could only sell its quartz to people living in or near the city. But when the railroad expanded, the company could load their quartz on tra
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