Slavery treats people as property and denies basic autonomy through coercion. Historical slave systems have differed in whether status was inherited, how manumission worked, and which categories were enslaved. Ownership of persons is the defining relationship. Low wages or harsh working conditions can be exploitative without making a labor system slavery in this precise sense.

A caste system assigns rank largely at birth and strongly restricts movement across categories. Endogamy, or marriage within the group, helps reproduce the boundary. Occupation, ritual standing, residence, and social interaction may also be tied to inherited position. Rare exceptions do not make the system open if its central rules still treat rank as ascribed.

An estate system ranks legally distinct orders with different rights and obligations. In a feudal pattern, nobility, clergy, and commoners might owe different duties and possess different claims to land or office. Estates can permit limited movement, yet legal status and inherited privilege keep the hierarchy more closed than a class system.

A class system is comparatively open. Achievement, education, occupation, and market position can alter rank, and law generally permits movement and marriage across classes. Open does not mean equal. Family wealth, school quality, discrimination, credentials, neighborhood conditions, and networks can reproduce advantage even when no statute assigns a child to the parents’ occupation.

The distinction between ascription and achievement is therefore comparative. Caste relies more heavily on assigned birth status, while class allows a larger role for achieved position. Actual societies can combine elements. A legally open labor market can contain inherited privilege, and an estate order can develop commercial routes that loosen some boundaries. Classify the dominant organizing rules rather than forcing every case into a pure type.

Marriage rules reveal how hierarchy reproduces itself. Strictly enforced endogamy keeps property, honor, and membership within a birth category. Class-based marriages can also be socially patterned because people meet in the same schools, workplaces, and neighborhoods. The difference is whether inherited legal or sacred status closes the boundary, or whether unequal resources and social networks make crossing less likely within a formally open system.

Researchers distinguish formal openness from observed mobility. A law may allow every occupation, yet a mobility table may show a strong association between parents’ and children’s positions. That result supports unequal opportunity inside a class system, not necessarily caste. Evidence of caste requires the inherited closure mechanism, while slavery requires ownership and coercion, and estates require legally ranked orders.

Openness also has more than one dimension. A person may change occupation while remaining excluded from an elite status circle. Another may gain income without gaining authority over work. Measuring education, occupation, property, prestige, and marriage patterns reveals which boundaries loosened and which remained durable.

System change can be uneven across institutions and cohorts. Suppose a country abolishes hereditary occupational assignments in 1990. People entering work afterward can legally choose jobs, yet older property restrictions remain and families continue to arrange marriages within inherited ranks. Occupational tables may show growing movement for younger cohorts while marriage and landholding stay closed. The society is not captured by calling it wholly caste or wholly class at one date. Researchers identify which boundary changed, for whom, and through which enforcement mechanism.

Observed mobility can lag behind a genuine legal opening because education, property, and networks take time to redistribute. It can also rise without a broad opening if a government grants exemptions to a small favored category. A strong analysis pairs laws and administrative rules with cohort mobility, marriage, school entry, and property records. If movement expands across many origins after barriers fall, the opening has wider reach. If only people connected to officials move, patronage may explain the exception. The time series distinguishes a transition in organizing rules from a snapshot that merely records who ended up where.

Quick review: Slavery centers ownership of persons. Caste centers inherited rank and enforced closure. Estates are legally distinct orders with unequal rights and duties. Class systems permit more achieved movement but can still reproduce advantage. Classify the rules, not one unusual life.

Watch the chapter connection

Social Stratification gives you a second explanation of the chapter ideas surrounding this lesson. As you watch, pause when the lesson concept appears and explain how the example fits.

Use this lesson for CLEP practice

Write one original example, one close nonexample, and one observation that would help you choose between them. This turns vocabulary recognition into the kind of applied reasoning the exam expects.