The word class began as a Roman census category for military service
Class comes from the Latin classis, the label Roman census takers used to sort citizens by wealth so they could decide who owed what military service. Only in the late eighteenth century did class overtake older terms like estates, ranks and orders as the main way of describing social hierarchy.
That shift reflected a change in values: hereditary status mattered less, while wealth and income came to signal where people stood. Sociologists still argue over definitions. In everyday speech social class often means socioeconomic status, but academics separate the two, treating class as a relatively stable cultural background and socioeconomic status as a person's current, more changeable circumstances. Some even claim social mobility has erased class boundaries.
Karl Marx defined class by relationship to the means of production: the proletariat works without owning them, while the bourgeoisie lives off the surplus that workers generate. Max Weber distinguished economic class from status, or Stand, which rests on social prestige. Jean-Jacques Rousseau, who saw people as born good and corrupted by society, shaped the French Revolution's ideas on inequality, whereas later Enlightenment thinkers considered inequality useful for progress and saw private property as its inevitable source.
Hierarchies are ancient. In Egypt, literacy marked the elite, and farmers, though the majority, did not own their harvests and owed labour on irrigation and construction. Yet the system allowed some mobility, a man of humble birth could rise to high office, and even the poorest peasant could petition the vizier. Slaves could buy or sell their servitude and sometimes rose to freedom or nobility. One historian observed that no Egyptian was free in the modern sense, since nobody could question a hierarchy topped by a living god. In Greece, classes replaced the declining clan system as populations grew and labour divided.
Societies long wrote class into law. Sumptuary laws dictated which clothes and jewellery each rank could wear, keeping lavish dress for aristocrats, and such rules became increasingly common in medieval Europe. Formal class or caste systems persist in some places, including India, Nepal, North Korea, Sri Lanka and some Indigenous communities.
Source: Social class
