What is cultural diffusion and how does it happen?

Cultural diffusion is the spread of cultural beliefs and social activities from one group of people to another. Cultural diffusion happens through letters, books, and, in modern times, through electronic media.

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Conflicts arising from drug cartels and goverment corruption is an issue that would most likely be considered as mexico's most challenging problem of today. the correct option among all the options that are given in the question is the third option or option "c". this problem has continued for a very long time.