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The 18th century lasted from January 1, 1701 to December 31, 1800 in the Gregorian calendar.During the 18th century, the Enlightenment culminated in the French and American revolutions. Philosophy and ...
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A machine is a tool that consists of one or more parts, and uses energy to achieve a particular goal. Machines are usually powered by mechanical, chemical, thermal, or electrical means, and are freque ...
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