SortStack #2067 — 2032-02-05

By year · Order from earliest to most recent.

1. Emperor Hadrian orders a great wall built across northern Britain 122

   The wall ran about 117 km from coast to coast and took roughly six years to build — soldiers' letters from its forts survive, including a birthday party invitation.

2. Christopher Columbus makes landfall in the Americas 1492

   Columbus never set foot on the North American mainland and insisted until his death that he had reached the edge of Asia.

3. The Taj Mahal is completed in Agra 1653

   Emperor Shah Jahan built it as a tomb for his wife Mumtaz Mahal, employing some 20,000 workers — and was later imprisoned by his own son within sight of it.

4. Queen Victoria dies after the longest reign in British history to date 1901

   She reigned for 63 years and her children married into so many royal houses she was called 'the grandmother of Europe.'

5. Alexander Fleming discovers penicillin in a moldy petri dish 1928

   Fleming found the mold after returning from holiday to his messy lab. He later said he hadn't planned to revolutionize medicine — 'but I suppose that was exactly what I did.'

6. DeepMind's AlphaGo defeats Go champion Lee Sedol 2016

   AlphaGo's 'Move 37' was so alien that commentators assumed it was a mistake. Lee won a single game back with a move fans dubbed 'God's touch.'

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