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1279
The yuan dynasty
it started in 1279 it ended in 1368 and they were able to have the first paper currency, they had really overarching algebra, and the first accurate calendar. -
The Ming dynasty
It started in 1638 and it ended in 1644, They were the last dynasty ran by the Han dynasty, Most of the great wall was built in this time, they had a great a big evolution of printing.