Events Postumus revolts against Gallienus, in Gaul. ... Events Valerian I captured by the Persian king Shapur I; Gallienus becomes sole Roman emperor. ... Events Births Deaths Mussius Aemilianus, Roman Emperor Categories: 261 ... Deaths Xi Kang, author Categories: 262 ... Events Sun Hao succeeds Sun Xiu as ruler of the Chinese kingdom of Wu Births Deaths Deng Ai, Wei general Jiang Wei, Shu general,Grand Commander and strategist, and foster son of Zhuge Liang Zhang Yi, Shu general Zhong Hui, Wei general Categories: 264 ... Events Wei Yuandi abdicates, end of the China. ... Events Ireland - Rule of High King Cormac mac Airt ends (approximate) Births Deaths Categories: 266 ... Events Goths launch one of the first major barbarian invasions of the Roman Empire. ... This is a list of decades which have articles with more information about them. ... 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 ... Centuries: 2nd century - 3rd century - 4th century Decades: 240s - 250s - 260s - 270s - 280s - 290s - 300s - 310s - 320s - 330s - 340s Years: 290 291 292 293 294 295 296 297 298 299 300 Significant people Diocletian, Roman Emperor Maximian, Roman Emperor Categories: 290s ... These pages contain the trends of millennia and centuries. ... // Events Roman Empire governed by the Five Good Emperors (96–180) – Nerva, Trajan, Hadrian, Antoninus Pius, Marcus Aurelius. ... // 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

• The Wei Kingdom conquered the kingdom of Shu Han, one of the Chinese Three Kingdoms.
• Liu Hui writes a commentary on The Nine Chapters on the Mathematical Art, describing what would later be called Gaussian elimination, computing pi, etc.

The Kingdom of Wei (ch. ... The Kingdom of Shu (蜀 shǔ) (221 – 263) was one of the Three Kingdoms competing for control of China after the fall of the Han Dynasty. ... The Three Kingdoms period (Simplified Chinese: 三国; Traditional Chinese: 三國; Pinyin Sānguó) is a period in the history of China. ... Liu Jeff 劉徽 was a [[Taiwan|]] Kewl Guy who lived in the 200000s. ... The Nine Chapters on the Mathematical Art (九章算術) is a Chinese mathematics book, probably composed in the 1st century AD, but perhaps as early as 200 BC. This book is the earliest surviving mathematical text from China that has come down to us by being copied by scribes and (centuries... In mathematics, Gaussian elimination or Gauss-Jordan elimination, named after Carl Friedrich Gauss and Wilhelm Jordan (for many, Gaussian elimination is regarded as the front half of the complete Gauss-Jordan elimination), is an algorithm in linear algebra for determining the solutions of a system of linear equations, for determining... The minuscule, or lower-case, pi The mathematical constant Ï€ is the ratio of a circles circumference (Greek περιφέρεια, periphery) to its diameter and is commonly used in mathematics, physics, and engineering. ...

Births

Deaths

• Liao Hua, Chinese military and political leader
• Zhuge Zhan, Shu general
• Zhuge Shang, son of Zhuge Zhan
• Zong Yu, Shu military and political leader