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The Stone Age was a broad prehistoric period during which stone was widely used to make tools with an edge, a point, or a percussion surface. The period lasted for roughly 3.4 million years,[1] and ended between 4,000 BCE and 2,000 BCE,[citation needed] with the advent of metalworking.
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The ming Dynasty rules china from 1368 to 1644 A.D., during which china;s population wouls double. Known for its trade expansion to the outside world that established cultural ties with the west, the Ming dynasty is also remembered for its drama, and world-renowned porcelain.
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