What is 250?
{{year nav|250}} {{Year in other calendars}} '''250''' ('''[[Roman numerals|CCL]]''') was {{Year article header/zc|250}}. == Events == *[[Diophantus]] writes ''Arithmetica'' the first systematic treatise on algebra. *A group of [[Franks]] penetrate as far as [[Tarragona]] in Spain (approximate date). *[[Goths]] invade [[Moesia]]. *The [[Alamanni]] drive the Romans from the modern area of [[Donau-Ries]]. *[[Decius]] begins a period of persecution of the [[Christianity|Christians]] in the [[Roman Empire]]. *[[Teotihuacán]] is rebuilt as a four-quartered cosmogram by [[Zapotec civilisation|Zapotec]] architects brought from [[Monte Albán]] in [[Oaxaca]]. *[[Kofun era|Kofun Period]] begins in Japan. == Births == * [[Helena of Constantinople]] * [[Licinius]] [[Category:250| ]]