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TIL Cyrillic Alphabet was firstly used by Bulgarians.

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k7n1 TIL According to a visiting English teacher, students at Pyongyang University of Science and Technology lack the concept of backing up a claim with evidence. The idea of the basic essay with a thesis, an introduction, a body paragraph with supporting details, and a conclusion is foreign to them
nekV9 TIL Asphalt is not a modern material. Regular production of asphalt is known from the 3rd millennium BC. The Babylonians even used it to fasten carved eyes to statues.
gMNnD TIL That before modern refrigerators, Russian and Finnish people would keep live brown frogs in their milk to keep it fresh. It was found that the secretions made by the frogs basically act as antibiotics, killing bacteria, and keeping the milk fresh and safe to drink.
5VDaQ TIL Bing Crosby’s “White Christmas” played on AFN radio in South Vietnam was the signal to Americans to begin evacuation in 1975
J1AJv TIL the "Red Phone", which linked Washington to Moscow wasn't red, or even a phone. It was teletype when the system started in 1963, switched to fax in 1986, and secure email since 2008.