The event that best illustrates the event is diffusion of US popular culture. Thus the option (B) is correct.
What is American culture?
American culture is based on the concept of equality and justice. It has flavors of the element i.e. conservative as well as liberal. It is the mixture of the customs and traditions.
In the above illustration there is the diffusion of the culture between the president Blush of united states and president of japan, Junichiro Koizumi. They are fascinated by the music of Elvis Presley.
Thus the option (B) is correct.
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