Apple announced iTunes at the Macworld Expo in San Francisco.
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Income tax was introduced in the UK so that prime minister William Pitt could collect funds to beat Napoleon.
Jean Pierre Blanchard flew the first hot air balloon in the US.
Five minutes after take-off, Sriwijaya Air Flight 182 crashed north of Jakarta, Indonesia, killing all 62 passengers.
The European Union's climate service declared that 2023 was the hottest year on record.
Steve Jobs announced Apple's very first smartphone, the iPhone 1.