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| Years: 248 249 250 251 - 252 - 253 254 255 256 | |
| Decades: 220s 230s 240s - 250s - 260s 270sCenturies: 2nd century 3rd century 4th century Decades: 220s 230s 240s 250s 260s 270s 280s 290s 300s 310s 320s Years: 270 271 272 273 274 275 276 277 278 279 Events Crisis of the Third Century Significant people Aurelian, Roman Emperor Marcus Claudius Tac 280sCenturies: 2nd century 3rd century 4th century Decades: 230s 240s 250s 260s 270s 280s 290s 300s 310s 320s 330s Years: 280 281 282 283 284 285 286 287 288 289 Significant people Diocletian, Roman Emperor Maximian, Roman Emperor 280s. | |
| CenturiesMillennia These pages contain the trends of millennia and centuries. The individual century pages contain lists of decades and years. See history for different organizations of historical events. See Calendar and List of calendars for other groupings of y: 2nd century1st century 2nd century 3rd century other centuries) Events Roman Empire governed by the Five Good Emperors' ( 96 180) Nerva, Trajan, Hadrian, Antoninus Pius, Marcus Aurelius. Significant persons Cai Lun, Chinese inventor Galen, medical writer Saint Irena - 3rd century2nd century 3rd century 4th century other centuries) Events The Sassanid dynasty of Persia launches a war to reconquer lost lands in the Roman east. 230 232 AD). Crisis of the Third Century shakes Roman Empire Emperor Valerian I is taken captive by the Pe - 4th century3rd century 4th century 5th century other centuries) As a means of recording the passage of time, the 4th century was that century which lasted from 301 to 400. Events Definitive declaration of biblical canon: Council of Carthage Demotic is replaced by Gr | |