A cosmic number. The 254th day in the year is September 11th. Events Diophantus writes Arithmetica the first systematic treatise on algebra. ... Events Pope Cornelius succeeds Pope Fabian. ... Events Sun Liang succeeds Sun Quan as king of the Chinese Kingdom of Wu. ... For the book see 253 (book). ... Events Births Deaths Wuqiu Jian, general of the Kingdom of Wei Categories: 255 ... Events Births Arius, founder of Arianism Deaths Invasions Goths invade Asia Minor. ... Events Pope Sixtus II succeeds Pope Stephen I Births Saint Gregory the Illuminator, founder and patron saint of the Armenian Church (approximate date) Deaths Pope Stephen I Categories: 257 ... Events Sun Xiu succeeds Sun Liang as ruler of the Chinese kingdom of Wu The Goths ravage Asia Minor and Trabzon Gaul, Britain and Spain break off from the Roman Empire to form the Gallic Empire Nanjing University first founded in Nanjing, China Births Emperor Hui of Jin China (approximate... This is a list of decades which have articles with more information about them. ... Centuries: 2nd century - 3rd century - 4th century Decades: 170s - 180s - 190s - 200s - 210s - 220s - 230s - 240s - 250s - 260s - 270s Years: 220 221 222 223 224 225 226 227 228 229 Significant people Alexander Severus, Roman Emperor Categories: 220s ... Centuries: 2nd century - 3rd century - 4th century Decades: 180s - 190s - 200s - 210s - 220s - 230s - 240s - 250s - 260s - 270s - 280s Years: 230 231 232 233 234 235 236 237 238 239 Events Alexander Severus is slain in a mutiny led by Maximinus Thrax, ending the Severan Dynasty and beginning (what many... Centuries: 2nd century - 3rd century - 4th century Decades: 190s - 200s - 210s - 220s - 230s - 240s - 250s - 260s - 270s - 280s - 290s Years: 240 241 242 243 244 245 246 247 248 249 Events Crisis of the Third Century Significant people Gordian III, Roman Emperor Philip the Arab, Roman Emperor Categories: 240s ... Centuries: 2nd century - 3rd century - 4th century Decades: 200s - 210s - 220s - 230s - 240s - 250s - 260s - 270s - 280s - 290s - 300s Years: 250 251 252 253 254 255 256 257 258 259 Events Crisis of the Third Century End of Yayoi era and beginning of Kofun period, the first part of the... Centuries: 2nd century - 3rd century - 4th century Decades: 210s - 220s - 230s - 240s - 250s - 260s - 270s - 280s - 290s - 300s - 310s Years: 260 261 262 263 264 265 266 267 268 269 Events Crisis of the Third Century Significant people Gallienus, Roman Emperor Claudius II, Roman Emperor Categories: 260s ... Centuries: 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 Tacitus, Roman Emperor Probus, Roman Emperor Categories... Centuries: 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 Categories: 280s ... These pages contain the trends of millennia and centuries. ... (1st 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. ... (2nd century - 3rd century - 4th century - other centuries) Events The Sassanid dynasty of Persia launches a war to reconquer lost lands in the Roman east. ... (3rd 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

• Pope Stephen I succeeds Pope Lucius I
• Wei Gao Gui Xiang Gong succeeds Cao Fang as king of the Chinese Kingdom of Wei

Stephen I, pope (about March 12, 254 to August 2, 257). ... Lucius I was pope for eight months (253-254). ... Cao Mao, ch. ... Cao Fang, ch. ... The Three Kingdoms period (Simplified Chinese: 三国; Traditional Chinese: 三國; Pinyin Sānguó) is a period in the history of China. ...

Births

Deaths

• Cao Fang, Chinese king of Wei, assassinated