The building of railroads made it easier to buy and sell thinned from father distances and for cheaper since you could pay less to send or buy more things via Railroad instead of by horse.
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Answer:Menes was a pharaoh of the Early Dynastic Period of ancient Egypt credited by classical tradition with having united Upper and Lower Egypt and as the founder of the First Dynasty.
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Among the earliest inventions were the abacus, the sundial, and the Kongming lantern. The Four Great Inventions,the compass, gunpowder, papermaking, and printing
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ancient China-are significant contributions of the Chinese nation to world civilization. China was the first nation to invent paper.
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The social causes of the Russian Revolution mainly came from centuries of oppression towards the lower classes by the Tsarist regime and Nicholas's failures in World War I.