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Crop rotation is the practice of growing a series of different types of crops in the same area in sequential.
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The Industrial Revolution came about primarily because of the steam engine. The thirty seconds or so required to devolop pressure made steam less favored for automobiles.
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The seed drill would sow seed in the uniform rows to cover up the seed in the rows. This way you wouldn't have to do so much hand work.
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The Industrial Revolution was the transition to new manufacturing processes. This transition included going from hand production methods to machines, new chemical manufacturing and iron production processes.
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The cotton gin machine seperated the cottonseed from the short-staple cotton fiber. This incention revolutionized the cotton industry in the United States.
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The Communist Manifesto has been recognized as one of the world's most influential political manuscripts.
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The assembly line reduced production costs for cars by reducing assembly time.