What happened as a result of China's influence on Korea during the postclassical era?
A. Korea forced Buddhists to give up their religion.
O B. Korea launched an invasion of Vietnam and Japan.
C. Korea developed its own written language.
D. Korea based its government on Confucianism.

Its D i got it right on my test

Explanation:

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option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: