The doctrine sponsored by the Qin Dynasty to support its state
(A) encouraged education, new ideas, and tolerated criticism of the state.
(B) broke the power of vassals in order to enhance the power of the emperor.
(C) paid the northern nomadic groups tribute to prevent invasions.
(D) tolerated local lords performing functions for the central government.
(E) used reciprocal social arrangements and scholar-officials as bureaucrats.
Answer: B