Why did Asoka use edicts carved in pillars and rocks? A. They honored past emperors
B. They provided places for worship
C. They advised people on how to be kind
D. They taught people the laws of the land
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explanation:

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:

the answer would more than likely a.)falling crop prices  

hope the answer is right and ,either way have a nice day.