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The best example of social mobility opportunities in the United States is a first-generation college student. Class systems are by far the most open, which means they have the most vertical mobility, of the three systems of stratification that have been explored thus far.

upward movement a shift in a person's social standing that causes them to advance in the status hierarchy. Decline in Mobility. the descent into lower social rank of a specific social group. movement within generations. When someone moves from a lower to a higher social class, it's referred to as upward mobility. In contrast, when people shift from a higher to a lower socioeconomic status, they undergo downward mobility.

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