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TIL that steel from the sunk Imperial German Navy is used extensively in space ship equipment, as steel produced after 1945 is contaminated by nuclear pollution.

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9wJ8m TIL About The Battle of the Eclipse. It was fought in the early 6th century BC in Anatolia (Turkey) between the Medes and the Lydians. According to ancient Greek historian Herodotus, the battle was interrupted by “day turning into night” (Solar Eclipse), Leading to a treaty ending the 6 year war.
Y7jMd TIL that there is a mathematical theorem named after pizza.
KOnZa TIL inventor of the Murphy-Bed, William Lawrence Murphy (1856-1957), created his first hide-away bed as means to convert his one-room apartment into a parlour, specifically to host the company of his future wife. It was considered inappropriate at the time to for a woman to enter a man's bedroom.
wL1Q6 TIL The battleship Imperator Aleksandr III was built by Imperial Russia, taken by Provisional Russia, given to Germany, given to Britain, given to White Russians, and then sold for scrap by the French. The ship guns were then sold to the Finns, stolen by Nazis, and returned to Russia after WW2.
VM4l8 TIL in 1945 San Marino became the first country ever to be ruled by a communist party through democratic elections