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TIL A khanate is a region or place ruled by a khan, who is a tribal leader with the support and loyalty of his warrior subjects. A khaganate is a large nomadic state comprising of several khanates, ruled by a khagan, who is a higher-ranking title than a khan.

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VMXeB TIL in the 13th century, the Holy Roman Emperor Frederick II took two infants, raised them apart only to be suckled by nurses and not to be communicated with in attempt to see what the natural language of humans was (Hebrew or the language of their parents). However, the children died of neglect.
0dgrp TIL that certain types of medication can cause spontaneous/involuntary orgasms without any stimulation as one of the side effects.
D1ErP TIL that the barge 'Akademik Lomonosov' in the Russian Far East is the world's first floating nuclear power station. It is also the world's northernmost nuclear power plant.
jaap TIL that the first successful anal fistula surgery was performed on Louis XIV in 1686. Anal fistulas then became highly fashionable among his royal court, with people lining up to undergo the procedure whether they needed it or not, or placing bandages on their bums to pretend that they did.
5VOOP TIL The Asteroid Belt's mass is about 4% of the Moon. The four largest asteroids contain 60% of the belt's mass