Innovation & Wealth › Industrial revolution › Adam Smith's The Wealth of Nations
Repeal of the Corn Laws
1846· Law or policy· Laws, labor & antitrust
Well documentedSolid records, texts or physical evidence.
In 1846 Britain scrapped its tariffs on imported grain, ending decades of protection for landowners and opening its free-trade era.
See it on the Innovation & Wealth map →What happened
The 1815 Corn Law blocked foreign wheat until British prices hit 80 shillings a quarter, keeping bread dear and landlords' rents high. Northern textile manufacturers Richard Cobden and John Bright led the Manchester-based Anti-Corn Law League (1838), a mass lobby using rallies, pamphlets and the new penny post. When potato blight struck Ireland in 1845, Conservative Prime Minister Robert Peel pushed repeal through in 1846 with opposition votes, splitting his party and ending his government.
Impact on society and the economy
It shifted power from landed aristocrats toward industrial and urban interests, and made Britain the champion of free trade until the 1930s.
How we know
Hansard debates and division lists, League pamphlets and accounts, grain price and import data, and Peel's papers.
Still debated
Historians debate why Peel did it, the Irish famine or long-held free-trade conviction, and how much repeal really lowered bread prices before the 1870s.
Connections (3)
▸Adam Smith's The Wealth of Nations laid the ideas behind Repeal of the Corn LawsMostly agreed
The connection
Smith argued that trade barriers raise prices for consumers to benefit a protected few. Seventy years later the Anti-Corn Law League made that case against grain tariffs, which kept bread dear for landlords' benefit. League leaders quoted Smith, and Prime Minister Robert Peel credited Richard Cobden's free-trade campaign in his 1846 resignation speech.
When and how
Britain, 1776–1846, through Smith's readers, Ricardo, and the Manchester-based League.
How sure are we?
League pamphlets and Peel's speeches cite free-trade economics; the lineage is widely documented, though Smith himself allowed exceptions such as defense-related shipping rules.
Debates
Interests mattered as much as ideas: manufacturers wanted cheaper food and less pressure for higher wages, so how much Smith's arguments changed minds is debated.
▸Ricardo's comparative advantage argued for Repeal of the Corn LawsWell documented
The connection
Ricardo's 1815 essay on the price of corn argued that grain tariffs forced farming onto poorer land, raising landlords' rents while squeezing profits and wages. Elected an MP in 1819, he pressed for lower tariffs. His reasoning armed the Anti-Corn Law League, which won repeal 23 years after his death.
When and how
London, 1815–1823; Ricardo sat in Parliament from 1819 until his death in 1823; repeal came in 1846.
How we know
Ricardo's essays and Parliamentary speeches; League literature drew on his theory of rent.
Debates
Ricardo proposed cutting the duty gradually to a modest fixed level, not immediate abolition; how directly his work influenced Peel is uncertain.
▸Repeal of the Corn Laws set the free-trade stage for First globalization: trade, migration, empireMostly agreed
The connection
Repealing tariffs on imported grain in 1846 committed Britain, then the world's leading economy and biggest food importer, to free trade. Once railways and steamships cut freight costs after 1870, that open market drew cheap wheat from the American Midwest, Russia and Argentina, anchoring the global trading system.
When and how
Britain, 1846, under Prime Minister Robert Peel, after Richard Cobden's Anti-Corn Law League campaign; grain imports surged from the 1870s.
How sure are we?
Trade statistics show Britain's grain imports soaring and wheat prices converging worldwide; Britain kept free trade until 1932 while most rivals raised tariffs.
Debates
How much repeal mattered versus falling transport costs is debated; its full effect came only decades later, when the American prairie opened.