In Mohenjo-daro 4,500 years ago many houses had toilets linked to a citywide sewer system.

2500 BC

London got a citywide sewer network only in the 1860s.

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The event

• Rise of Mohenjo-daroc. 2500 BC · Mohenjo-daro. Mohenjo-daro became one of the largest cities of the Indus Valley Civilisation, with a grid of streets, brick houses, covered drains and the Great Bath. Its script remains undeciphered to this day.

25th century BC

More amazing facts

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• 2560 BC · 31 BC · 1969 Cleopatra (born 69 BC) lived closer in time to the Moon landing (about 2,040 years) than to the building of the Great Pyramid (about 2,490 years).
• 2560 BC The oldest inscribed papyrus is a logbook of stone deliveries for the Great Pyramid.
• 2500 BC · 2334 BC Sargon of Akkad boasted that ships from Meluhha moored at his capital.
• 2500 BC · 2100 BC The Sumerian King List includes a woman ruler — a tavern keeper.
• 2500 BC There are 60 minutes in an hour because of the Sumerians.

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