Americans are expected to achieve, have high levels of education, work hard, and have material success, which is attributed to individual success; lack of success is blamed on his or her faults. this is an example of what sociologists refer to as

Social Stratification

Explanation:

According to my research on studies conducted by various sociologists, I can say that based on the information provided within the question this is an example of Social Stratification. This is a social differentiation where all the individuals that are part of a society are divided into socioeconomic categories based on many different factors such as income, social status, power, higher education, etc. This then basically determines the individual's success within the society.

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