Question

Farming in East Asia
a) arose first in the central plain of the Yellow River and then spread to the central Yangzi River valley
b) arose first in the central Yangzi River valley and then spread to the central plain of the Yellow River
c) arose in the central plain of the Yellow River but never in the central Yangzi River valley
d) arose independently in two areas: the central plain of the Yellow River and the central Yangzi River valley
d) did not arise independently but was introduced from Southwest Asia

Answer

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