Examlex
The stage of sleep in which most people spend the least amount of time during the night is
Biographies
Written accounts of individual lives, showcasing personal and professional experiences.
Class Conflict
The strain or conflict arising in society from the contrasting economic interests and aspirations among individuals of diverse social classes.
Twentieth-century
Referring to the period from 1901 to 2000, marked by significant technological, political, and cultural changes worldwide.
Social Changes
Transformations in societal structures, behaviors, or cultural norms over time.
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