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TIL that in 1917 the USA granted citizenship to Puerto Ricans, and 2 months later imposed conscription for entry into WWI, applicable to all male citizens which now included Puerto Ricans. About 20,000 served in WWI

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9Ya86 TIL that Alexender Graham Bell tried to eliminate American sign language and deaf schools in the U.S because he was afraid of a deaf race emerging from it.
J1v4v TIL that Confederados are the descendants of supporters of the Confederate States of America who immigrated to the Empire of Brazil at the invitation of Emperor Pedro II after the end of the American Civil War.
LkvlP TIL that Pythagoras invented a "Greedy Cup" which would empty onto the user when overfilled.
5b4R TIL: Romans used to crush 4 million mollusk shells to create one pound of purple pigment; This is why the color Purple is associated with Royalty as only the Kings could afford that color
Z8E4R TIL British General Charles O'Hara had the unfortunate "distinction" of surrendering not only to George Washington at Yorktown, but Napoleon Bonaparte at Toulon as well.