The division of large numbers of people into layers according to their relative power, property, and prestige is referred to as

Social Stratification

Explanation: Social stratification refers to a system which attempts to segment or categorize its people into socioeconomic groups or tiers based on wealth, prestige, power, race. It could be viewed a 'societal layering' aimed at creating a clear or obvious distinction between people on the basis of their relative power, property, prestige and other material properties.

As such people with relatively greater resources are regarded more highly than those with fewer resources.

on the first day of new student week, amber revealed to her roommate that she is a lesbian. this is an example of self-disclosure.

fertile good for trade etc