The Dark Ages

Marcus Aurelius & peak Roman Emp. 161-180;Maya (end 800) begin 200. Magnetic North known and used in China 3rd Cent. AD. All inhabitants of Roman Empire declared Roman citizens 212. Sassanid Empire (Persia) 226-642. Breakup into various Romance languages begins 250. General Postumus‘ Gallic Empire 259-274; Goths sack Athens 268 ................
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