Marriage as a concept is believed to be at least 4,300 years old

Around the world, marriage plays an important role in bolstering social stability

Marriage was around in one form or another long before written history. From bonds between two people to large polyamorous gatherings of spouses, the rich history of marriage practices demonstrates that partnerships have been, and will likely continue to be, incredibly diverse.

Love is a more recent part of marriage

Love matches are incredibly late to the marriage game. For most of our history, marriage has been about alliance, wealth, property, power, and, as an occasional afterthought, the couple liking each other. All that changed when Enlightenment thinkers were inspired in their pursuit of personal happiness, including in their choice of mate.

Marriage is a legally and socially sanctioned union

Marriage's definition may seem simple—a union of two or more people who join their lives together in a culturally appropriate fashion. However, elaborate customs and diverse expectations dictate the roles spouses will play for one another. Across different regions and periods, marriages have taken a great number of forms.

Anthropologists have found that, across the globe, nearly every culture embraces marriage customs

Despite these commonalities, different cultures have distinct customs, such as the number of people who can be married at one time, the types of marriage partners allowed, and whether elaborate ceremonies are observed. Families can range from the smaller nuclear unit to extensive multi-generation families and households.

Marriage is experiencing a general decline

Marriage has taken drastically different forms than in the past. The transformation of marriage from a form of economic dependency for women to an equal partnership has forged demographic shifts. Richard Reeves, author of "Of Boys and Men," explains how economic and educational factors have potentially destabilized partnerships and changed patterns of “marriageability” for middle- and lower-class men.

Divorce reportedly existed in hunter-gatherer societies

Though divorces have been around for centuries and have become increasingly common, they can still be perceived with hints of shame. Historian Stephanie Coontz advises readers that the good old days of marriage may have been just as bad as today, considering its prevalence throughout history.

Ancient Chinese marriages began with an elaborate marriage proposal and acceptance between families

The chief objectives of early Chinese marriages involved joining and enhancing the two families and ensuring succession with numerous descendants. Chinese couples still compare astrological signs, although some of the more elaborate rituals of betrothal gifts and sleeping in the “cock loft” are far less common.

Each state has its own regulations regarding marriage

Some states don’t even require a ceremony or license, opting to allow “common law” marriages. Prenuptial agreements and other legal matters will likely require an attorney’s help. And marriages can offer benefits, like tax breaks.

Variations of marriage existed in ancient West Africa

The enormous landmass of Africa has been home to numerous cultures and countries, and there’s been no singular way to get married. One striking aspect has been the matrilineal belt across central Africa, where wealth was passed down through the female, rather than the male, line. In some regions, it was also acceptable for a woman to take more than one husband.

A medievalist explains how romantic love emerged as a cultural concept

Many long-form stories written in English were originally considered "romances," a term derived from the Old French word for "the speech of the people." But changes in medieval culture, triggered by a number of 12th-century church reforms, led to a new interest in what we now consider romantic love, including a new view of marriage as a pursuit of love rather than a transaction. Those new perspectives were then reflected in the period's popular stories, including stories in Chaucer's "Canterbury Tales."

Long, happy marriages have these important traits

It may not be rocket science, but a lifetime partnership could still use some study. This quick list of smart traits gets into key traits that typically help a marriage remain happy ever after. Using studies from trained therapists and researchers, the article explains how really knowing each other, accepting bids for attention, seeking resolution to conflict, and more are essential to durable marriages. Read it here.

Wedding rings can be traced back to ancient Egypt, where the ring symbolized eternity

The tradition later spread through Greece and Rome, evolving with precious gems during the medieval period. Diamonds became central after De Beers' 1947 "a diamond is forever" campaign, boosting sales by 50% in three years.

The wedding industry is a roughly $200B global market

That market is shaped by both tradition and commercial influence. In the US, couples spend an average of $35K on a wedding, while Indian weddings range from $5K to more than $100K. Despite rising costs, weddings remain a deeply emotional tradition, celebrating love and human connection.

Two-spirit relationships and identities

Queer relationships and transgender people aren’t new. Even though gay marriage has been legalized fairly recently in Western countries, people all over the world have engaged in relationships beyond heterosexuality throughout the centuries. Although contemporary tribes have various views around homosexuality, there are numerous examples of queer relationships within indigenous traditions across what is now called the Americas.

When did humans start kissing romantically?

This article explores the ancient roots of romantic kissing. Current archaeological evidence dates sexual and romantic lip kissing to about 2,500 BCE. A Mesopotamian clay tablet from the time shares a tale of two deities locking lips. There's also...

Interracial and same-sex marriages have both been illegal at certain times during US history

June 12 marks Loving Day, the date when interracial marriage was legalized in 1967. A brave Virginia couple fought back against anti-miscegenation laws, which were finally struck down by the Supreme Court. The Court also ruled for the protection of same-sex marriages in 2015.

Mortgages evolved from exclusive agreements for the wealthy into a key part of homeownership today

The word "mortgage" comes from medieval French, meaning "death contract"—but the modern American mortgage has a more recent and complicated history. This explainer looks at how mortgages evolved from exclusive agreements for the wealthy into a key part of homeownership today, including the impacts of New Deal policies, redlining, and the Fair Housing Act.

Colonial America imported brides for their beer brewing skills

Life in the New World's English colonies was hard, so it's easy to see how these colonizers might've wanted to reach for a cold one more often than not. This article explains how beer brewing became one of the most critical skills expected in imported English wives.

For most of human history, property rights were in the elite’s hands

Humans learned to domesticate dogs long before they formed the concept of private property. But by the era of the ancient Greeks and Romans, property law and ownership became more sophisticated.

George Washington married Martha Dandridge Custis in 1759

Before marrying George Washington, Martha Dandridge Curtis was a wealthy widow with two children. Their marriage formed a stable personal and economic partnership. She managed Mount Vernon during Washington's absences and later played a central role as a political host and confidant throughout his public life.

The word 'toasting' goes back to the 17th century

The act of clinking drinks and wishing fellow revelers good fortune is an ancient tradition, but the term for it dates back to the late 17th century. Although there are numerous explanations for its origins, the most likely is that people associated the act with the toast placed in wine, which provided flavor and absorbed acidity.

The marathon’s roots can be traced back to a Greek myth

Legend has it that the first marathon took place in 490 BCE, when Pheidippides, an ancient Greek soldier, ran from the Battle of Marathon back to Athens—approximately 25 miles—to inform his people they’d defeated the Persians. The story is likely apocryphal: No Greek historian mentioned it until over 500 years later.

Global life expectancy has more than doubled since the 1850s

The human species experienced a dramatic increase in expected lifespan over the past 150 years. Antibiotics, improved sanitation, and better worldwide food distribution are a few factors contributing to this rapid transformation. Use this interactive resource to explore longevity gains over time and compare these improvements across the globe.

Memes can be traced back to the chain letter

Such intentional reshaping of communication transmissions dates back at least hundreds of years to the advent of the chain letter, a type of message that asks readers to create their own copy or at least forward it to others.

Massachusetts passed the first compulsory education law as early as 1642

The legislation required families to instruct children in religious and colonial law. By 1852, Massachusetts mandated that all children ages 8 to 14 attend school. By 1918, every state had a similar law.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

Explore an interactive map built from more than 100,000 survey responses on where people find joy in their lives

The Brothers Grimm were lawyers before they were storytellers, and became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people

See the most iconic photos from four decades of LIFE magazine

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by over 1.5 million Muslims.

See how each of the more than two million known species relates to each other—and to common ancestors—in this zoomable tree of life.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Many legends about George Washington, including his supposed wooden teeth and the story of cutting down the cherry tree, lack evidence.

While atoms are normally made of protons, neutrons, and electrons, exotic ones have been built with antimatter—alternate versions of normal matter that live for fractions of a second and are about a billion times as rare.

Cultural norms about how to handle the bodies of loved ones in communities in West Africa have hampered Ebola responses.

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

Apeirophobia is an overwhelming fear of living forever, perhaps stemming from the brain's inability to conceptualize an infinite life.

After her fellow cult members tried to kill her with an LSD-infused hamburger, one member of the Manson Family, the murderous cult led by Charles Manson, decided to testify against the group's leader.

A small portion of The Winstons' 'Amen, Brother,' an obscure '60s gospel record, is the basis for thousands of hip-hop tracks, making it one of the most sampled records ever that's informally known as 'the Amen break.'

Bone marrow (soft tissue found inside certain bones) generates roughly 500 billion new blood cells each day

'Saturday Night Fever,' the 1977 film that introduced disco to the mainstream, was based on a fabricated magazine story.