What were key cultural achievements of
China during this period?

Major achievements of ancient China

Gunpowder, paper, printing, and the compass are sometimes called the Four Great Inventions of Ancient China. Kites were first used as a way for the army to signal warnings. Umbrellas were invented for protection from the sun as well as the rain.

explanation:

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the supreme court can hear any case it wishes as long as four justices agree to hear it.

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