250

Millennium:	1st millennium
Centuries:	2nd century – 3rd century – 4th century
Decades:	220s  230s  240s  – 250s –  260s  270s  280s
Years:	247 248 249 – 250 – 251 252 253

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.

Births

for more information, see Category:250 births.