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The steam engine was an engine that powered the steam boat and the train.
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An engine that powers the steam boat and the train
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The Canal is a thing that connects rivers.
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It pulled out seeds from cotton much faster than hand
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It made rifles a lot easier to make.
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The National road was the first national highway built.
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It let people communicate from long distances
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It cut grain much faster than hand.
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It helped plow fields easier by hand.