Marriage Types
Monogamy and Polygamy
Monogamy is marriage between two individuals, and it's the most common form of marriage globally. It can be serial (remarriage after divorce or death of a spouse) or lifelong.
Polygamy refers to marriage involving more than two partners. It's less common but practiced in a number of cultures, often linked to religious or cultural traditions. Polygamy has two main forms:
- Polygyny involves one man married to multiple wives. This is the more common form of polygamy, found in some Islamic societies and many African cultures. It's often linked to wealth and status, since supporting multiple households requires resources.
- Polyandry involves one woman married to multiple husbands. This is rare. It's practiced in some Tibetan and Himalayan communities, where it's often tied to land scarcity. If brothers share one wife, the family's farmland doesn't get divided among heirs, keeping resources intact.
Marriage Customs

Traditional Practices in Marriage Arrangements
Arranged marriages involve families selecting spouses for their children. These are common in South Asian cultures (India, Pakistan, Bangladesh) and exist on a spectrum. Some are fully arranged by parents with little input from the couple, while others involve parental approval of a partner the child has chosen. The key distinction from "love marriages" is that family plays a central decision-making role.
Two major economic customs accompany marriage in many societies:
- Bride price (also called bridewealth) requires the groom's family to pay the bride's family. Practiced in parts of Sub-Saharan Africa, the Middle East, and Southeast Asia, it can include livestock, property, or money. It compensates the bride's family for the loss of her labor and symbolizes the value placed on her and the new alliance between families.
- Dowry is the reverse: the bride's family gives gifts or money to the groom's family. Historically common in European and South Asian cultures, dowry can include jewelry, household items, or financial assets. It's often framed as the bride's share of her family's wealth, meant to support the new household. In practice, dowry demands have sometimes led to exploitation, which is why countries like India have outlawed the practice (though it persists informally).
Specialized Marriage Customs
These practices show how cultures maintain family structures when a spouse dies:
- Levirate marriage occurs when a widow marries her deceased husband's brother. Practiced in some African and Middle Eastern cultures, it ensures continued economic support for the widow and her children while keeping property and lineage within the family.
- Sororate marriage is the mirror image: a widower marries his deceased wife's sister. Found in some Native American and African societies, it provides continuity in childcare and household management and reinforces the alliance between the two families.
Both customs reflect a view of marriage as a bond between families, not just individuals. When one spouse dies, the family relationship is preserved through a new union.

Marriage Rules
Kinship-Based Marriage Regulations
Most societies have rules about who you can and can't marry, and these rules often revolve around group membership.
- Endogamy requires marriage within a specific social group, whether that's defined by caste, religion, ethnicity, or class. The Hindu caste system is a classic example: traditionally, you marry within your own caste. Royal families historically practiced endogamy too, marrying within the nobility to preserve status and political power. Endogamy tends to preserve cultural identity and reinforce social boundaries.
- Exogamy mandates marriage outside one's social group, often defined by clan, village, or family lineage. The Australian Aboriginal moiety system is a well-known example: society is divided into two halves (moieties), and you must marry someone from the opposite moiety. Exogamy promotes alliances between groups and increases genetic diversity.
Kinship systems also shape who counts as an acceptable marriage partner. Patrilineal systems trace descent through the father's line, matrilineal systems follow the mother's lineage, and bilateral systems recognize both. Which system a society uses affects inheritance, where a couple lives after marriage, and social obligations to relatives.
Cultural Variations in Marriage Rules
Some societies have specific preferences for marrying certain types of cousins:
- Cross-cousin marriage (marrying the child of your parent's opposite-sex sibling, such as your mother's brother's child) is preferred in parts of South India and Aboriginal Australia. It strengthens alliances between families that are already connected through marriage.
- Parallel-cousin marriage (marrying the child of your parent's same-sex sibling, such as your father's brother's child) is practiced in some Middle Eastern cultures. It keeps wealth and property within the patrilineal family line.
These cousin categories matter because different kinship systems classify relatives differently. In many Western societies, all cousins are treated the same, but in societies with cross-cousin or parallel-cousin preferences, these are distinct social categories with different marriage rules attached.
Age restrictions on marriage also vary across cultures. Minimum marriage ages differ by country and legal tradition, and some cultures accept significant age gaps between spouses. Child marriage remains a serious issue in parts of South Asia and Sub-Saharan Africa, where poverty and gender inequality drive the practice despite legal prohibitions.