“It was the greatest act of violence for 66 million years”: why the modern world was born of bloodshed

In the 18th century, developments in finance, weapons and industry converged to create a modern economy born of bloodshed. Clifton Crais explores how killing powered the industrial age

A 19th-century print shows sailors in a small boat harpooning a whale beside a sailing ship. The whale thrashes in the waves as spouts of water rise from its back.

Published: February 25, 2026 at 3:30 PM

Save

Imagine you’re in Nebraska, standing on North America’s Great Plains, where the broad Platte and Missouri rivers join on their way to the mighty Mississippi. It’s 1804, and in the blistering 36°C heat of summer you’re accompanying Captain Meriwether Lewis and Second Lieutenant William Clark as they head west towards the Pacific Ocean, exploring the commercial possibilities of this vast new country. Stretching away in front of you is a sea of chocolate-brown: thousands of animals, each standing as high as a man and weighing upwards of 900kg.

Ad

Now picture putrefying carcasses and heaps of bleached bones extending as far as the eye can see. “The bones were everywhere,” homesteaders complained, “as thick as cones under a big fir tree”, and so numerous that it was impossible to plough the land. That was mere decades after Lewis and Clark’s fabled expedition.

By the end of the 19th century, America’s population of bison had been reduced from tens of millions to around 350. Much of this killing unfolded over the course of just a few years – one of the most concentrated acts of ecological destruction in history.

The usual explanation for the slaughter of the American bison ties it to the government’s decision to solve its ‘Indian problem’ – kill the bison and you destroy the Indigenous peoples’ food supply. “Every buffalo dead is an Indian gone,” wrote Colonel Richard Irving Dodge, who had fought in the Civil War before heading west to subdue the Native American population. But politics didn’t kill the bison. Economics did.

A black and white photograph showing large piles of bison hides piled up after many animals have been killed for their skins

Thousands of bison hides lie in huge piles in Dodge City, Kansas, 1878. Advances in chemistry enabled hides to be processed and used in belts in industrial machinery | Credit: Getty Images

General Philip Sheridan, another Civil War veteran who led the Indian Campaign across the Great Plains, knew as much. These hunters “have done more in the last two years… to settle the vexed Indian question than the entire regular army has done in the last 30 years”, he said. “Send them powder and lead, let them kill, skin and sell until the buffaloes are exterminated.”

A combination of guns, finance and industry made the near extinction of the bison possible. New advances in firearms made the act of slaughtering bison faster and achievable from a far greater distance. Banks rushed across the Mississippi, lending money to hunters and turning them into “businessmen with rifles”. Advances in chemistry transformed the animals’ body parts into saleable commodities, especially their notoriously difficult-to-process hides.

Many of these hides ended up in factories – somewhere between 2 and 6 million in England in the 1870s and 1880s alone. Skins became drive belts that were integral to the machinery of mass production in the industrial revolution. Until the advent of rubber, industrial belting was made from hides, including those of the American bison. Meanwhile, American settlers gathered millions of tonnes of bison bones. Railway companies laid down branch lines for the sole purpose of collecting the bones and shipping them east, where they were processed in places such as the Michigan Carbon Works in Detroit – that state’s largest factory before the automobile revolution. Bones were turned into fertiliser, carbon filters and inks. For a time, bison bone could be found in ‘fine bone’ china and even in mascara. Back on the Great Plains, wealth accrued by killing and bone harvesting supported the rise of farming and ranching.

What unfolded on the killing fields of the US was part of a global phenomenon. Industrial capitalism’s ‘big bang’ and our current age of global warming emerged out of the greatest act of violence the planet had seen since the Cretaceous–Paleogene extinction event 66 million years ago, when a meteor crashed into the Yucatán, killing off the dinosaurs and enabling the rise of mammals.

The development of modern finance and the mass production of guns, bullets and gunpowder made killing for capitalism possible. This also helps explain the rapid rise to global economic dominance of the UK and the US: two countries that were adept at extracting wealth from destruction. By the first decade of the 19th century, the US’s GDP per capita was on a par with the UK’s. The economic historians Peter Lindert and Jeffrey Williamson have written that the US became “one of the first, if not the first, [countries] to join the modern economic growth club” pioneered by the UK. The two would soon account for a large percentage of global wealth and until 1900 were responsible for most global industrial CO₂ emissions.

Industrial capitalism’s ‘big bang’ emerged out of the greatest act of violence the planet had seen in 66 million years

Firearms have a long history – almost 1,000 years – but in the 18th century the flintlock musket became the ubiquitous weapon of choice. A dramatic improvement on earlier guns that used matchlocks, it was versatile and cheap to produce – the Ford Fiesta of firearms. An experienced marksman could get off three shots in a minute. Workshops and factories across the western world scrambled to meet the insatiable global demand for the new weapon. England became the world leader in musket manufacture and distribution, beginning in London’s East End before spreading to Birmingham and Liverpool.

Muskets were useless without gunpowder and lead, and England had plentiful supplies of the latter. Mines in Northumberland and Derbyshire yielded thousands of tonnes of the metal each year. When it came to gunpowder, the British East India Company’s exploitation of the subcontinent’s resources proved vital, especially the principal chemical, saltpetre. The monopolistic East India Company considered its control over the saltpetre trade to be “combined and interwoven with the welfare and even with the existence of the empire in India”.

Workers inside a brick‑walled workshop tend large heated pans built into furnaces while others handle tall conical molds set over containers, with steam rising from the equipment. Metal vessels filled with processed gunpowder materials are scattered across the floor, showing multiple stages of early gunpowder production.

Gunpowder is made at the Woolwich Arsenal, c1750. Controlling large reserves of Indian saltpetre, an ingredient of gunpowder, Britain became a major player in arms manufacture | Credit: Bridgeman Images

Thanks to the research of Dr Nicholas Radburn at Lancaster University, we have quite precise figures for the millions of pounds of saltpetre imported into the UK, and the overall production of British gunpowder, across the entire 18th century. Between 1698 and 1808, Britain produced more than 522 million pounds of gunpowder. Much went to its military, especially the navy, where a single shot from a 16-pound cannon used 8 pounds of powder. But more than 78 million pounds were exported to Africa, the Caribbean and what would become the United States and Canada. These are just the official numbers, though; the real totals are probably higher. In any case, that was enough powder for more than 1.25 billion musket shots – a number greater than the entire global population in 1750.

Other nations got in on the action, too, especially the French and the Dutch. Americans weren’t far behind, and by the 1820s US-made weapons were being sold far and wide, especially across the Pacific Ocean and into China, where American Colt pistols were used in the 1850–64 Taiping Rebellion – one of the most catastrophic wars in human history.

Plying the world with weapons was a volatile business – literally. Stores of gunpowder and saltpetre frequently exploded. The 1794 Ratcliffe Fire in London, sparked when a barge loaded with saltpetre caught fire, was the worst conflagration in the capital since 1666. It was described by The Times as “a striking and awful spectacle” – devastation on a scale not matched in London until the Blitz of 1940–41. On the other side of the Atlantic, throughout the 19th century there were almost yearly accidents at the huge DuPont explosives factory in Delaware, where a local cemetery was filled with the victims.

Murder and pillage are nothing new. In fact, both are as old as our species. However, with the widespread proliferation of weapons in the 18th century, killing became infinitely easier.

This is where modern finance enters the picture. In the 15th and 16th centuries, the Spanish were outstanding at pillaging, producing men such as Hernán Cortés who rampaged across Mexico. The Conquistadors ransacked from the Americas the equivalent of billions of dollars in today’s money, much of it in precious metals. But Spain struggled to convert wealth produced by violence into capital for investment and production – and capital is what capitalism is all about. Instead, it spent its fortunes on religious and dynastic wars, churches, art, buildings and other forms of conspicuous consumption.

England’s financial transformation was a game changer, building on innovations pioneered by the Dutch in the 17th century. In the 18th century, there was a revolution in English banking, along with a tranche of developments including insurance, bonds, stock markets, patent law and an increasingly standardised currency. In the first quarter of the 19th century, the number of banks outside London increased 30-fold, and doubled in that city.

London became the “capital of capital”, as the economic historian Youssef Cassis termed it, led by the Bank of England, which was established in the closing years of the 17th century. “The multiplication of banking companies,” Adam Smith wrote in The Wealth of Nations (1776), was a great example of the virtues of competition and increased public confidence in the economy. Wealth – including that generated by violence – was free to become capital.

By 1820, the US had just over 300 banks. Forty years later, that number had grown to more than 1,500 – a five-fold increase, and many more than in the UK. With banking came an array of financial innovations, from insurance to stocks and bonds. Like that of its former imperial master, the US legal system protected wealth – whether it was land, money or, across the South, human beings – which meant that it was easy to transform wealth into investable capital.

A busy 19th‑century city street where a crowd of men in top hats gathers in animated discussion, while two barefoot newsboys hold up papers in the foreground. Behind them, tall commercial buildings with large signs and a horse‑drawn streetcar marked “Broadway” frame the bustling urban setting.

Crowds throng Wall Street, New York City’s banking hub, during a financial panic in 1857. The United States’ rise as an economic heavyweight was boosted by its ability to convert the wealth it accrued from the killing of bison, beaver and whales into capital for investment | Credit: Bridgeman Images

This is how bison hides ended up in factories, and their bones in your ancestor’s teacup, connecting Manchester with Wyoming, halfway around the world. The connections to killing don’t stop there, though. Those factories required lighting. Sunlight alone was unacceptable to factory owners, who wanted their workers to be labouring as long as humanly (or inhumanly) possible, sometimes from five in the morning until well into the night. Until the advent of hydrocarbons such as paraffin and natural gas, it was whale oil that kept these places lit.

England was soon consuming at least 50,000 barrels of the stuff each year, generating more than 3 billion lumen-hours of illumination. By the 1830s, most of the whale oil entering England ended up in its factories for lighting and lubrication. Meanwhile, across the Atlantic, anywhere between a quarter and a third of sperm-whale oil (which produced the best light) harvested by American whalers made its way into factories. Whale oil was also used for lighting in Caribbean mills, where enslaved people were forced to work continuously to process the sugar-cane juice that helped provide cheap energy for the industrial working classes.

Demand for lubrication and lighting in both factories and cities resulted in the mass slaughter of whales, from Greenland to the Indian Ocean. Though it is impossible to determine the exact scale of the killing, we do know that about 2 million whales were slaughtered between 1750 and 1900.

Whaling produced huge profits until the number of those marine mammals dwindled, and whalers were forced to spend more time at sea, often returning home with empty casks. In the case of New England’s whale industry, profits were reinvested in a variety of businesses, from cotton mills to railways and the transition to fossil fuels in the US. One of the world’s largest textile factories – the Wamsutta Mills in New Bedford, Massachusetts – was funded by the harvesting of whales. And some of the early investors in what became John D Rockefeller’s powerful and notorious Standard Oil Company amassed their capital from hunting whales.

Whale oil was used for lighting in Caribbean sugar mills, where enslaved people were forced to work continuously

People found many ways of turning into capital the natural resources in their surroundings. England’s land-enclosure movement was one of them, and has commonly been offered as an explanation for the development of capitalism, going back to the works of the classical political economists in the 18th and 19th centuries.

But using violence to generate capital was a global process, and an ongoing one. It proved possible to turn just about anything into profit, from whales and bison to deer, beaver and African elephants – plus another mammal: Homo sapiens. The spread of guns led to a global increase in enslavement, most infamously across Africa. Beginning in the early 16th century and continuing for over 350 years, more than 12.5 million enslaved people were trafficked from Africa’s shores – by far the largest forced migration in human history.

A painting depicting a slave auction. A man in a blue suit and grey top hat stands on top of a large box, talking to a crowd of gentleman, pointing towards a group of people of colour sitting on the floor, looking sad

Enslaved African people are sold at auction in the US, c1852. Vast numbers perished as a result of the transatlantic slave trade | Credit: Getty Images

However, nearly 7.9 million people – 63 per cent of the total Atlantic trade in human beings – were moved in just 60 years from the mid-18th century, during the industrial revolution and just as weapons began flooding the continent. This rapid expansion of the slave trade precisely tracks the import of gunpowder into Africa, as Nicholas Radburn has demonstrated definitively. The UK alone exported more than 26 million kg of explosives to Africa in the 18th century, most of it after 1750. Weapons yielded the greatest gains. One result, as the tyrannical King Adandozan of Dahomey (reigned 1797–1818) bragged, was a kingdom where his people “cultivated not with hoes, but with guns”.

People hunting people is part of the nasty and brutish reality of enslavement. But how many people lost their lives to produce the 7.9 million people shipped across the Atlantic, where nearly 10 per cent died along the way to the Americas? I have estimated upwards of 2–3 people died to yield a single enslaved person. In other words, perhaps as many as 24 million humans perished in the flood of weapons and enslavement.

Similar ratios unfolded elsewhere in the world, where guns were used to hunt people. In the south-east US – where Indigenous people were employed to hunt and enslave other Native Americans – the hunters killed three Native Americans for every one they captured.

The rapid expansion of the slave trade precisely tracks the import of gunpowder into Africa

We know that profits from the transatlantic trade increased dramatically in this period, as work by Nobel-Prize-winning economists Daron Acemoglu, Simon Johnson and James Robinson has demonstrated. The Caribbean sugar and American cotton that made its way into workers’ cups of tea and into the English textile mills – which were releasing CO₂ and beginning to warm the Earth’s atmosphere – were tied to Africa’s killing fields. The industrial revolution and our own age of global warming are inextricably tied not just to the institution of slavery – a continuing subject of debate across the world – but also to the mass destruction of people, animals and the environment that guns and finance made possible.

This is the dark reality of capitalism’s creation myth – one that historians and climate scientists are now beginning to understand. The industrial revolution and the global warming that now threatens our very existence emerged from the globalisation of killing for profit. The deaths of millions of Africans that underpinned the entire Atlantic slavery complex is only the most obvious connection. While there were other factors at play here, the wealth generated by the system of slavery “contributed causally to Britain’s industrial revolution”, according to a 2022 study. This recognition underpins many ongoing and fraught discussions, especially in the UK – most recently the February 2025 parliamentary debates on reparations, and the July 2025 University of Edinburgh report on donor links to slavery.

These conversations, however, miss something very basic. History’s horrors go deeper into the totality of destruction that made our world economy – one that entangles the deaths of Africans with the slaughter of bison and whales in addition to a vast number of other species. This is one reason why the popular term ‘Anthropocene’ may not suffice, and why I have suggested a different word to describe the epoch that created our contemporary planetary peril: the ‘Mortecene’ – the Age of Killing and Death.

Clifton Crais is a professor of history at Emory University. His new book is The Killing Age: How Violence Made the Modern World (Picador, 2026)

Ad

This article was first published in the February 2026 issue of HistoryExtra Magazine

Ad

Ad

Loading...

Ad

Loading...