What is one important way in which Prince Shotoku changed Japan?
A. He turned it into an agricultural society
B. He divided power among the chiefs of clans
C. He increased contact with neighboring cultures
D. He introduced the craft of bronze and iron smithing

B. he divided power among the chiefs of clans

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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