In 1789 a twenty-one-year-old apprentice named Samuel Slater boarded a ship for New York disguised as a farm laborer. Britain banned the export of textile machinery and the emigration of skilled mechanics who could build it. Slater carried no drawings. He had memorized the design of Arkwright's machines while working in a Derbyshire mill. In 1790, backed by Rhode Island merchants, he built working spinning machines at Pawtucket, and American factory production began. In Britain some called him "Slater the Traitor"; in the United States he was hailed as the father of American manufactures. Britain's secrets could not be kept for long. Industrialization was about to spread around the world.

Europe follows

Belgium was the first continental country to industrialize, helped by coal and iron deposits and by English mechanics such as William Cockerill and his son John, whose works near Liège became among the largest in Europe. France industrialized more gradually, with strong luxury and textile industries. Germany, divided into many states, created a customs union called the Zollverein in 1834, lowering trade barriers among its members, and opened its first railway in 1835. After unification in 1871, firms such as Krupp in steel and BASF in chemicals made Germany an industrial giant that soon rivaled Britain.

The United States

American industrialists borrowed and adapted. The merchant Francis Cabot Lowell toured British mills around 1810 and memorized the workings of the power loom. His associates built a planned mill town in Massachusetts, named Lowell after him, staffed largely by young women from New England farms. The Lowell mill girls lived in supervised boarding houses, published their own literary magazine, the Lowell Offering, and staged some of the first strikes by American women in 1834 and 1836 when wages were cut. By the late nineteenth century the United States had become the world's largest industrial economy, powered by railways, steel and mass production.

The second industrial revolution

From about 1870 a new wave of technologies arrived. Henry Bessemer's process of 1856 made cheap steel possible. Chemistry produced synthetic dyes, fertilizers and explosives. Electricity, developed by figures such as Edison and Tesla, began to light cities and drive motors. The telegraph and later the telephone carried information instantly. This wave depended more on science and on research laboratories than the first had, and countries such as Germany and the United States, with strong technical education, took the lead.

Japan's deliberate leap

After the Meiji Restoration of 1868, Japan's new leaders decided to industrialize on purpose and fast, partly to avoid being colonized. The Iwakura Mission of 1871 to 1873 sent senior officials to study factories, schools and governments across the United States and Europe. The state built model enterprises, such as the Tomioka Silk Mill of 1872, designed with French help and staffed by young women who were trained and then sent to teach elsewhere. Many state enterprises were later sold to private firms. Within a few decades Japan had railways, shipyards and a modern army, and it became the first non-Western country to industrialize. Tomioka is now a World Heritage Site.

Winners and losers

Industrialization did not spread evenly. In India, hand spinners and weavers faced flooding imports of cheap British machine-made cloth, and colonial rule gave India little control over its tariffs. India had once supplied fine cotton to the world; in the nineteenth century it became a major market for Lancashire. Historians debate how much of this deindustrialization was caused by colonial policy and how much by the sheer cost advantage of machines, but the reversal was real. Across much of Asia, Africa and Latin America, colonies and weaker states were pushed into exporting raw materials and importing manufactured goods. Russia began rapid state-led industrialization only in the 1890s under the finance minister Sergei Witte, whose government borrowed heavily abroad to build the Trans-Siberian Railway.

Industry also moved people. Tens of millions of Europeans crossed the Atlantic in the nineteenth century, many on steamships, to work in American mines, mills and stockyards. Millions of indentured laborers from India and China were carried to plantations and mines across the British Empire and the Americas. The industrial world was built by migrants as much as by machines.

Worked example: how to catch up

Imagine you advise a government in 1870 that wants to industrialize. What can you learn from these cases?

• Acquire know-how: like Slater, Lowell and the Iwakura Mission, learn from those already ahead.
• Build connections: railways and customs unions, like the Zollverein, create larger markets.
• Invest in people: schools and technical training made Germany and Japan leaders.
• Keep policy control: India's experience shows the cost of having trade decided by a foreign power.

There was no single path to industry, but the countries that succeeded combined learning from others with choices made for themselves.