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History·29 April 2026·5 min read

The South Sea Bubble — the madness that ruined a nation

In 1720, the British poured everything into a company promising riches from the southern seas. Then it all collapsed.

The South Sea Bubble — the madness that ruined a nation
Image: domeniu public · Wikimedia Commons

The South Sea Company promised fabulous profits from trade with the Spanish colonies. Shares rose tenfold in months. Everyone was buying — nobles, merchants, even Isaac Newton.

When it burst

In the autumn of 1720 the bubble burst, ruining thousands of families. Newton, who had lost a fortune, reportedly said: "I can calculate the motion of the stars, but not the madness of men".

The smartest man of the age lost money in a bubble. No one is immune to collective greed.