If one event was responsible for another
Answer:
Display Rule
Explanation:
According to my research on studies conducted by various sociologists, I can say that based on the information provided within the question this difference is due to a formation of the Display Rule. This term refers to informal cultural norms that individuals learn very early in their lives from different interactions within the society that they are part of. Which is why each culture is different, such as is exhibited by the emoticons used.
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Albert einstein was a famous, and probably the most well know one.