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1750 BCE-1040 BCE
Shangs biggest accomplishment was that they first ever chinese writing system.

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1045 BCE- 256 BCE
One of Zhous mayor accomplishments was the developent of the 3 philosphies.

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221 BCE- 226 BCE
Qin made one of the popular places to visit. The great wall of china. That was also one of the greatest achievement of the qin dynasty.

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206 BCE- 220 CE
Han actually invented paper. Paper was just one of the things they invented they also invented many other things.