Silla completed the unification of the Three Kingdoms in

Answer and explanation

Correct answer: B. 668

  1. Step 1: Silla defeated Goguryeo in 668 with the help of the Tang dynasty, after Baekje fell in 660. Answer: 668. Why not the others: 612: That is the year of the Battle of Salsu. 918: That is the year Goryeo was founded. 935: That is the year Silla surrendered to Goryeo.

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