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The income you need to fall in America's lower, middle and upper ...
American lower class - Wikipedia
Types of Social Classes of People - CliffsNotes
A Third of Americans Now Say They Are in the Lower Classes
9.3F: The Lower Class - Social Sci LibreTexts
Social class - Wikipedia
The Class Structure in the U.S. | Boundless Sociology - Course …
LOWER CLASS | English meaning - Cambridge Dictionary
Social class | Definition, Theories, & Facts | Britannica
How the American middle class has changed in the past five …