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TIL that switching from leaded to unleaded fuel in the 1970’s has been linked to a 56% decrease in violent crime during the 1990’s.

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gML8A TIL during WWII the Dominican Republic took in 100,000 Jewish people fleeing Europe
jNwER TIL about the Heart Attack Grill. A restaurant where guests over 350lbs eat free and you get spanked for not finishing your food. They have had multiple overweight spokespeople die.
4XEkX TIL J.D. Salinger, author of The Catcher in the Rye, served in WW2 and landed on D-Day while carrying the first six chapters of the book with him. At the end of the war he checked himself into a mental institution. When he got out, he signed back up and participated in the denazification of Germany.
lonmG TIL Finland trains elite soldiers in Lapland in preparation for a future war with neighbouring Russia. The two countries share an 833 mile border and were in conflict during WWII.
GY1KG TIL When he was the Governor of Tennessee, former US President Andrew Johnson made with his own hands a very handsome suit of clothes and sent it to the Governor of Kentucky, who had been a blacksmith in his young days. He forged a shovel and tongs and sent them to Johnson.