◆ On this day

March 25

4 sourced moments from March 25 in history: Christiaan Huygens discovered Titan on 25 March 1655; Britain banned its slave trade in 1807, not slavery itself; The Triangle factory fire killed 146 workers (1911), plus 1 more.

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4 things happened on March 25

newest first ↓

1957 Society & Economy · Politics & Law

The Treaty of Rome created the European Economic Community

On one March afternoon in 1957, six nations signed a customs deal that quietly grew into the European Union.

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1911 Society & Economy · Politics & Law

The Triangle factory fire killed 146 workers

Locked doors turned a New York garment loft into a death trap in 1911, and the outrage rewrote workplace-safety law.

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1807 History · Modern

Britain banned its slave trade in 1807, not slavery itself

British ships had carried 3.1 million Africans by 1807. The ban came in stages, with a £100 fine per captive — and slavery itself carried on.

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1655 Space · Solar System

Christiaan Huygens discovered Titan on 25 March 1655

Huygens spotted Saturn's biggest moon with lenses he ground himself. Its haze later fooled scientists about its size until Voyager 1 measured it.

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