› added 2 years ago

78

TIL about Abu bakr al-razi. A Persian physician, philosopher and alchemist who was among the first to use humoral theory to distinguish one contagious disease from another, and wrote a pioneering book about smallpox and measles providing clinical characterization of the diseases.

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awA69 TIL Mexico's official name is 'United Mexican States' and it has 31 states.
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