A millennium (pl. millennia) is a period of time equal to one thousand years (from Latin mille, thousand, and annum, year).
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1st millennium BC - 1st millennium - 2nd millennium In the Gregorian calendar, the 1st millennium is the period of one thousand years that commenced with the year 1 of the Common Era. There is no "year zero" in the Gregorian calendar.
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Upper Paleolithic
• 10th millennium BC | 9th millennium BC | 8th millennium BC
• 7th millennium BC | 6th millennium BC | 5th millennium BC

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The 3rd century is the period from 201 to 300 in accordance with the Julian calendar in the Christian Era.

Overview

After the death of Commodus in the previous century the Roman Empire was plunged into a civil war.
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As a means of recording the passage of time, the 4th century (per the Julian/Gregorian calendar and Anno Domini era) was that century which lasted from 301 to 400.

Overview

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list of decades which have articles with more information about them.

During the twentieth century, it became popular to look at that century's decades as historical entities in themselves.
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Centuries: 2nd century - 3rd century - 4th century

210s 220s 230s - 240s - 250s 260s 270s
240 241 242 243 244
245 246 247 248 249

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Events and Trends

• Crisis of the Third Century

Significant people

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Centuries: 2nd century - 3rd century - 4th century

220s 230s 240s - 250s - 260s 270s 280s
250 251 252 253 254
255 256 257 258 259

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Events and Trends

• Crisis of the Third Century

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Centuries: 2nd century - 3rd century - 4th century

230s 240s 250s - 260s - 270s 280s 290s
260 261 262 263 264
265 266 267 268 269

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-

Events and Trends

• Crisis of the Third Century

Significant people

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Centuries: 2nd century - 3rd century - 4th century

250s 260s 270s - 280s - 290s 300s 310s
280 281 282 283 284
285 286 287 288 289

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Events and Trends

• Around 285 Saint Antony retired to a hermits life in the Egyptian desert.

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Centuries: 2nd century - 3rd century - 4th century

260s 270s 280s - 290s - 300s 310s 320s
290 291 292 293 294
295 296 297 298 299

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Events and Trends

Significant people

• Diocletian, Roman Emperor

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Centuries: 2nd century - 3rd century - 4th century

270s 280s 290s - 300s - 310s 320s 330s
300 301 302 303 304
305 306 307 308 309

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Events and Trends

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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
267 268 269 - 270 - 271 272 273
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
268 269 270 - 271 - 272 273 274
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
269 270 271 - 272 - 273 274 275
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
270 271 272 - 273 - 274 275 276
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
271 272 273 - 274 - 275 276 277
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
272 273 274 - 275 - 276 277 278
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
273 274 275 - 276 - 277 278 279
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
274 275 276 - 277 - 278 279 280
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
275 276 277 - 278 - 279 280 281
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3rd century - 4th century
240s  250s  260s  - 270s -  280s  290s  300s
276 277 278 - 279 - 280 281 282
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Crisis of the Third Century (also known as the "Military Anarchy" or the "Imperial Crisis") is a commonly applied name for the crumbling and near collapse of the Roman Empire between 235 and 284 caused by three simultaneous crises: external invasion, internal civil war, and
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Aurelian
Emperor of the Roman Empire

Reign September 9, 270–September 275
Full name Lucius Domitius Aurelianus
Born 214
Dacia or possibly Sirmium
Died September 275
Caenophrurium, Thrace
Buried

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Claudius Tacitus
Emperor of the Roman Empire

Emperor Tacitus on a coin. The reverse celebrates his victory over the Eastern tribes ( VICTORIA GOTTHI ).
Reign September 25, 275 - June 276
Full name Marcus Claudius Tacitus
Born
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Probus
Emperor of the Roman Empire

Bust of Probus
Reign 276 - September/October, 282
Full name Marcus Aurelius Probus
Born c.
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