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TIL that the US reached peak coal mining employment in 1923, when there were 883,000 coal miners employed in the US. Today, there are only 50,000 coal miners in the US. Nevertheless, the US produces about 50% more coal than it did 100 years ago.

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E1pGw TIL while the Apache Wars ended with the surrender of Geronimo in 1886, the last Apache raid into the United States occurred in 1924, and the Mexican Indian Wars continued for another nine years, until the final holdouts were defeated in 1933.
gM1L8 TIL that Psy initially refused to upload "Gangnam Style" to Youtube, saying that he would be "humiliated" because he didn't have any international fans.
6EbPm TIL Hitler was a highly decorated veteran of WWI. He only wore his wound badge, Iron Cross First Class, and Nazi Party Gold Badge #1 after assuming power.
lo9o7 TIL the worlds largest shopping mall is located in Iran. Measuring at 21,000,000 sq ft.
PYr6E TIL toothpicks were popularized by Charles Forster who bought the patent & targeted stationers who would not buy them; hired Harvard students to go to those retailers and ask for toothpicks, who had to turn away customers. Forster would return to those stores and later sell billions.