Answer:
The Steam Engine
Explanation:
Thomas Savary, English inventor and engineer, gave way to what became the Industrial Age, a time of mass production and new manufacturing processes striving for efficiency. The steam engine did just that and allowed factories to be built anywhere, not just along rivers or wind currents. Because of the steam boat, the United States pioneered in shipping across seas, even became the first to put a passenger steamship on the water in 1807.
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Desire of the railroad companies to build rail lines on a deal of new land that open up to whether it was for the "free" or "slaves" .
I think it was the "Malay Massacre"
(5+p)
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