1381-1649
Commons, Levellers and Diggers
Long before anyone wrote of political economy, the English argued about the ground. The rising of 1381, the anti-enclosure revolts of the Tudor century and the pamphlet wars of the 1640s all turned on the same grievance: land held in common had been fenced off by men who had not made it.
The Levellers demanded that the law stop treating landed property as a source of political privilege. Gerrard Winstanley's Diggers went further, planting crops on St George's Hill in 1649 and declaring the earth a 'common treasury', not a call to confiscate what people build, but a refusal to accept that the soil itself could be private in the way a plough is.
1750s, 1790s
The Physiocrats and the single tax
In France, Quesnay, Turgot and Mirabeau built the first systematic school of economics and reached a startling conclusion: since the produit net, the surplus above the cost of labour and capital, arises from land, the state should raise its revenue there and nowhere else. Turgot's impôt unique is the ancestor of every single-tax proposal since.
In England Thomas Paine published Agrarian Justice in 1797, arguing that cultivated value belongs to the cultivator but the value of the earth itself belongs to the community, and Thomas Spence campaigned for parish ownership of land with the rent paid out to residents.
1776-1870
Classical economics
Adam Smith observed that ground rents are the tax base least likely to do harm, because a charge on them discourages nothing. Ricardo showed that rent is a residual, it rises as population and industry advance, without any effort by the owner. John Stuart Mill drew the political conclusion and helped found the Land Tenure Reform Association to capture the 'unearned increment'.
By the middle of the nineteenth century the economics was settled among economists. What was missing was a movement.
1879-1900
Henry George and the Single Tax movement
Progress and Poverty appeared in 1879 and became one of the best-selling books of the century, outsold in the English-speaking world only by the Bible. George's question was plain: why does poverty deepen as wealth increases? His answer was that the gains of progress are absorbed as land rent, and his remedy was to take that rent for public revenue and abolish taxes on labour and enterprise.
The effect in Britain was immediate. George's lecture tours of 1882 and 1884 filled halls from Glasgow to Cardiff; the Scottish Land Restoration League, the English Land Restoration League and hundreds of local single-tax societies followed. Georgism shaped the early Labour movement, Liberal land reform and the Irish land agitation alike, it was for a generation the common property of the British left and the radical right at once.
1909-1931
The People's Budget and the British near miss
Lloyd George's 1909 budget carried a land value duty and a tax on the unearned increment, and the fight over it broke the power of the House of Lords. Churchill, then a Liberal, made the Georgist case in Parliament as forcefully as anyone ever has: the landlord 'contributes nothing to the process from which his own enrichment is derived'.
The land valuation was begun, then abandoned in wartime. A second attempt in Snowden's 1931 budget died with the government that passed it. Britain has come closer to taxing land value than almost any country, twice, and stopped both times.
1900-1950
Application overseas
Where the idea could be applied on new ground, it was. Site-value rating spread through Australian and New Zealand municipalities, South African cities, western Canada and Denmark, where the Retsforbundet (Justice Party) entered government on an explicitly Georgist programme. In the United States, Pittsburgh and Scranton taxed land at higher rates than buildings for most of the twentieth century.
In Britain the movement narrowed into education and lobbying, the Henry George Foundation from 1907, the School of Economic Science, the land-tax campaigns still running today.