200 |
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Galen of Pergamum proves arteries
are carriers of blood, overturning the earlier belief
that the arteries were merely air tubes.
|
| 208 |
Severus goes
to defend Britain. He orders repairs to Hadrian's wall. |
| 210 |
|
211 |
Caracalla, Severus's
eldest son, becomes Emperor of Rome. He rules until
217. |
| 211-217 |
Construction of the Roman Baths of Caracalla. |
212 |
Caracalla murders
his brother and rival to maintain his grip on the
throne.
Edict of Caracalla extends Roman citizenship to almost
all freemen in the empire. |
| 213 |
|
| 214 |
|
| 217 |
Macrinus, Emperor of Romel.
He rules until 218. |
218 |
Elagabus becomes
puppet-emperor of Rome, sitting on the throne until
222. The actual gris eminence in charge is his mother,
Julia Maesa. |
220 |
Period of the
Three Kingdoms begins in China. It lasts until 265. |
| 224 |
King Ardashir I begins the first circular-plan city
at present-day Firuzabad, southwestern Iran. |
227 |
King Ardashir I founds a new
Persian empire. |
230 |
Emperor Sujin,
first known ruler of Japan. |
| 231 |
Chinese invent the wheelbarrow. |
235 |
Death of Emperor
Alexander Sevrus. Maximinus becomes Emperor of Rome.
He rules nominally until 238, but in reality, Rome
descends into political chaos. |
| 238 |
Chaotic and bloody year sees
in the space of a few months the rapid deaths and succession
of Emperors including Maximinus, Gordianus I, Gordianus
II, Pupienus
Maximus,
and Balbinus.
Finally, Gordian III becomes
Emperor
of Rome.
He rules
until
244. |
| 239 |
Jewish Year 4,000 |
| 241 |
King Ardashir I finishes the first circular-plan city
at present-day Firuzabad, southwestern Iran. |
| 244 |
End of Gordian III's reign. Philip
the Arabian becomes Emperor of Rome. He rules until
249. |
249
|
End of Philip the Arabian's reign.
Decius becomes Emperor of Rome. He rules until 251. |
250 |
Decius orders
persecution of Christians. New laws make emperor-worship
compulsory. |
251 |
Decius dies
in battle with the Goths.
Gallus,
Emperor of Rome, rules until 253. |
253 |
Valerian becomes
Emperor of Rome, ruling with his son Gallienus as co-Emperor. |
259 |
Gallienus becomes
Emperor of Rome. He rules until 268.
Period of the Thirty Tyrants begins.
|
265 |
The
Western Qin dynasty reunites China. It rules until
317. |
268 |
Goths sack
Athens, Corinth, and Sparta.
Emperor Claudianus II rules the Empire until 270.
|
270 |
Aurelius becomes
Emperor of Rome. He rules until 275. |
275 |
Emperor Aurelius
dies.
Tacitus becomes Emperor of Rome. |
| 276 |
Emperor Tacitus killed by his own troops.
Probus becomes Emperor of Rome. |
| 282 |
Emperor Probus of Rome dies when he orders his soldiers
to do peaceful work. They express their displeasure by
killing him.
Carus becomes Emperor of Rome. |
283 |
Emperor Carus
dies in battle, killed by his own troops. |
284 |
Diocletian becomes Emperor
of Rome. He will rule until 305. |
286 |
Diocletian
divides the Empire. Maximian rules the Western or European
half as co-emperor while Diocletian puts himself in
charge of the Eastern half , which will later become
the Byzantine Empire. |
287 |
Carausius, commander of
the Roman British navy, leads a revolt and rules Britain
as a local emperor until one of his comrades, Allectus,
murders him in 293. |
293 |
Carausius murdered by one
of his fellow rebels. |
296 |
|
| 300 |
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