What is the meaning of cultural diffusion

cultural Diffusion is the spreading out of culture, culture traits, or a cultural pattern from a central point

Spreads of belief and social activities of one culture to different religions.

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no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.

is it multiple choice