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3rd_century

- 4th_century 210s 220s 230s 240s - 250s - 260s 270s 280s 290s 300s Years: 245 246 247 248 249 - 250 - 251 252 253 254 255 ----

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.

    Births

  • Maximian, Roman_emperor (approximate date)
  • Constantius_Chlorus, Roman_emperor and father of Constantine the Great (approximate date)
  • Licinius, Roman_emperor (approximate date)
  • Arius, Christian priest and namesake of Arianism

    Deaths

  • January_20 - Pope_Fabian
  • Ambrose_of_Alexandria, Christian writer (approximate date)
  • Denis, Christian saint
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