What was the new kind of power in the early 1800s? It was _________________________.

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问题 What was the new kind of power in the early 1800s?
It was _________________________.
(11)In the early 1800s a new kind of power changed transportation and trade along the Mississippi River. This power was steam. People already knew how to use steam engines to run machines. Some people wanted to move boats in the same way. The first ste

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答案steam

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