Which dynasty reunited China in 581 after nearly four centuries of division?

Answer and explanation

Correct answer: B. The Sui dynasty

  1. Step 1: Yang Jian founded the Sui in 581 and then conquered the south. Step 2. The Tang followed in 618 after the Sui collapsed. Answer: The Sui dynasty. Why not the others: Tang came after Sui, Jin was a divided-era dynasty and Yuan was Mongol.

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