250
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[edit] 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 Christians in the Roman Empire.
- Teotihuacán is rebuilt as a four-quartered cosmogram by Zapotec architects brought from Monte Albán in Oaxaca.
- Kofun Period begins in Japan.