European colonialism, roughly 1492 to 1965, did not merely conquer territory. It conquered the household. Across four continents and five centuries, colonial administrators, missionaries, judges, and demographers rewrote the rules of who could marry whom, what made a marriage valid, how property and children passed between generations, and what counted as scandal. The single most consequential cultural export of European empire was not Christianity, capitalism, or the nation-state in the abstract, but the bourgeois patriarchal monogamous companionate household as the legitimate unit of social reproduction. Every other arrangement, polygyny, matrilineal descent, child betrothal, woman-marriage, ghost marriage, levirate, sororate, devadasi temple service, taqalid marriage forms, the Chinese minor marriage, the Pacific big-man network, was measured against this template and found wanting.
The reshaping happened through several mechanisms that recurred across the colonized world. First, the codification of customary law. Wherever colonial administrators encountered fluid kin-based practices, they hired ethnographers, summoned chiefs, and wrote rules. The Natal Code of Native Law in 1878, the Anglo-Muhammadan law of British India, the French Code de l'indigenat in West Africa, the Dutch adat law in the Indies, the Spanish patronato real in the Americas. Each of these produced a "tradition" that was at least partly a colonial invention, frozen in print, then enforced by colonial courts. Customary law became a stable thing only when written down and standardized, often empowering senior men against women, juniors, and minorities in ways that pre-colonial practice had not.
Second, the Christian mission. Catholic and Protestant missions across Africa, Asia, Oceania, and the Americas insisted that the church wedding, monogamous and indissoluble, was the only legitimate marriage. Polygynists could not be baptized, could not communicate, could not be buried in consecrated ground without renouncing surplus wives. The human cost was enormous and is still being calculated. John Witte Jr.'s history of the Western tradition shows how the Catholic sacrament of marriage, codified by the Council of Trent in 1563 and exported by the missions, became the template that confronted indigenous, African, and Asian marriage systems for the next four centuries.
Third, the racial-sexual policing of the imperial frontier. As Ann Stoler and others have shown, colonial states obsessed over interracial marriage, concubinage, and the legitimacy of mixed-race children. Anti-miscegenation laws in the American South, the Dutch Indies' regulations on European-native cohabitation, the British Indian Civil Marriage Act of 1872 that allowed Hindu-Muslim-Christian marriages but only outside their respective communities, the Apartheid regime's Prohibition of Mixed Marriages Act of 1949, all sought to manage the boundary between colonizer and colonized through the bedroom. Marriage law was where empire's racial categories were enforced most intimately.
Fourth, the demographic and economic restructuring that pulled men into wage labor, mines, plantations, and armies and left women managing households alone. South African migrant labor reshaped Tswana, Zulu, and Tsonga marriage; Caribbean plantation economies under slavery produced consensual unions, visiting unions, and other arrangements that European observers misread as the absence of marriage; Indian indentured labor across Fiji, Trinidad, Mauritius, and South Africa produced new diasporic marriage forms; the Atlantic and Pacific labor migrations of the late nineteenth and early twentieth centuries pulled marriage apart at a continental scale. The colonial economy required certain household forms and prevented others.
Fifth, the export of European family law itself. The Code Napoleon of 1804 was implemented in French colonies and influenced civil codes from Egypt to Vietnam. The English common law of marriage was exported across the Commonwealth. Spanish and Portuguese family law shaped Latin America. By the time of independence in the mid-twentieth century, post-colonial states inherited legal architectures in which the monogamous, patriarchal, civilly registered marriage was the default, with customary and religious marriages handled as exceptions. This is the layered system, civil over customary over religious, that still structures family law from Senegal to Indonesia, from Mexico to the Philippines.
The romantic lens, Law 5 (Revise), forces attention to what happened next. Post-colonial revision has been ongoing for seventy years. Some states (Tunisia, Turkey, India in part) imposed civil codes that further marginalized customary and religious forms. Others (Indonesia, Egypt, Nigeria) entrenched plural systems that preserved religious jurisdiction. Women's movements have used both routes to push for equality, with results that are still being negotiated. Indigenous and minority communities have used the language of customary and religious marriage to defend cultural autonomy, sometimes at the cost of internal dissenters. The colonial reshaping is not over; we are still inside it, still arguing about which of its inheritances to keep and which to discard.
To read this history collectively is to refuse the two easy stories. It is not the case that colonialism brought civilization to barbaric kinship; it is also not the case that pre-colonial marriage was a paradise destroyed. The honest reading is that European empire violently substituted one kind of plural system for another, frozen and ranked and policed, and that the global household is still working through the consequences. The bourgeois companionate monogamous household, that nineteenth-century European invention, is the most successful single cultural export in human history. Its hegemony is now cracking, partly under its own internal contradictions, partly under post-colonial revision. What replaces it is not yet decided.