The Han Dynasty was established by , but its greatest emperor was . To get a job in the Han government, a person had to study the ideas of . The Han also helped to protect Chinese culture by protecting the method of creating .

Liu Bang founded the Han Dynasty, and Emperor Wu is often considered its greatest emperor. Government officials studied Confucian ideas. The final blank refers to silk: the Han protected the method of making silk, which China kept secret from other peoples. Paper was developed during the Han period, but it is not the method the sentence says they protected.

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