Re: Event of the Year
 

312

Battle of Milvian Bridge: Constantine I defeats Maxentius and becomes the only Roman Emperor in the West. During the battle, he reportedly has a vision of a cross with the words in hoc signo vinces ("In this sign you shall conquer").

Re: Event of the Year
 

311

On his deathbed, Galerius, declares religious freedom throughout the Empire, focusing on ending anti-Christian persecution.

Re: Event of the Year
 

310

While Constantine is campaigning against the Bructeri, Maximian attempts to make himself emperor at Arles. Constantine's troops swiftly return, forcing Maximian to flee. He surrenders at Marseille.

Re: Event of the Year
 

309

* The Spanish provinces revolt from the control of Maxentius, acknowledging Constantine as their Emperor.
* Construction of a stone bridge across the Rhine near Cologne is completed.

Re: Event of the Year
 

308

Maxentius starts the construction of the basilica bearing his name, the largest building in the Roman Forum.

Re: Event of the Year
 

307

# Galerius unsuccessfully invades Italy and names Licinius as Augustus.
# Flavius Valerius Severus, charged by Galerius to defeat Maximian and Maxentius is defeated by the latter. Abandoned by his troops, he commits suicide.

Re: Event of the Year
 

306

Christianity is established in Britain. British bishops participate in the councils of Arles (314), Nicaea (325) and Arminum (349).

Re: Event of the Year
 

305

May 1 - Diocletian and Maximian, Emperors of Rome, retire from office.
Constantius Chlorus and Galerius declared Augusti; Flavius Valerius Severus and Maximinus Daia appointed Caesars.

Re: Event of the Year
 

304

Major Wu Hu (barbarian) uprising in China; the Hun Liu Yuan establish the Han kingdom, beginning the Sixteen Kingdoms era in China.

Re: Event of the Year
 

303

September 25 - On a voyage preaching the gospel, Saint Fermin of Pamplona is beheaded in Amiens, France.

Re: Event of the Year
 

302

Diocletian begins passing laws against Christians.

Re: Event of the Year
 

301

Armenia becomes the first nation to accept Christianity as a state religion.

Re: Event of the Year
 

300

= Magnetic compass for navigation is invented in China
= A Sanskrit collection of fables and fairy tales, the Panchatantra, is written in India.

Re: Event of the Year
 

299

Empress Jia frames Crown Prince Yu for treason and has him deposed.

Re: Event of the Year
 

298

*The manufacture of cultured silk becomes popular from Korea to Japan.
*Christians are expelled from the Roman army

Re: Event of the Year
 

297

= Galerius conquers Ctesiphon from the Persians; however, as part of the peace treaty, it is returned in exchange for Armenia
= Narseh of Persia and Diocletian conclude a peace treaty between Persia and Rome.
= Maximian ends the revolt in Mauritania

Re: Event of the Year
 

296

Constantius Chlorus and Asclepiodotus reconquer Britain from the usurper Allectus, restoring it to the Roman Empire.

Re: Event of the Year
 

295

Tuoba Yi Tuo becomes a chieftain of the Chinese Tuoba tribe.

Re: Event of the Year
 

294

Tuoba Lu Guan succeeds Tuoba Fu as chieftain of the Chinese Tuoba tribe

Re: Event of the Year
 

293

Constantius Chlorus restores the northern Rhine border after defeating the Franks. Franks keep living in the north, because the Roman population had fled.

Re: Event of the Year
 

292

The oldest known Mayan stele is erected.

Re: Event of the Year
 

291

The War of the Eight Princes begins in China.

Re: Event of the Year
 

290

* Diocletian and Maximian meet in Milan on the five-year anniversary of their rule to discuss their successes and failures.

Re: Event of the Year
 

289

Maximian's attempt to reconquer Britain from the usurper Carausius fails due to bad weather.

Re: Event of the Year
 

288

* Campaign by Diocletian in Raetia.
* In Gaul, Maximian builds a fleet to fight Carausius.

Re: Event of the Year
 

287

September - Beginning of the first Indiction

Re: Event of the Year
 

286

# Carausius, commander of the Classis Britannica, is accused of piracy and sentenced to death. He responds by declaring himself emperor of northern Gaul and Britain.

Re: Event of the Year
 

285

Diocletian divides the Roman Empire in half.

Re: Event of the Year
 

284

* November 20 - Diocletian becomes Emperor.
* The Bagaudae in Gaul revolt against the Romans.

Re: Event of the Year
 

283

Carus conquers Ctesiphon, capital of the Persian kingdom.
Carus is a victim of a military conspiracy, and is killed near the Tigris.
Carinus succeeds his father Carus as Emperor.
December - Numerian is proclaimed Emperor by his soldiers.

Re: Event of the Year
 

282

A new city was constructed in Fuzhou slightly south of the original city Ye. The Main Street of the city has remained unchanged since that time.

Also in this year, Patriarch of Alexandria Theonas of Alexandria becomes the first bishop to use the title Pope.

Re: Event of the Year
 

281

The birth of Aquilina, Christian saint.

Re: Event of the Year
 

280

The Kingdom of Wu was dissolved by Jin, finally ending the Three Kingdoms period of China.

Re: Event of the Year
 

279

In the Balkans, Probus defeats the Burgundians and the Vandals.

Re: Event of the Year
 

278

Maxentius, Roman emperor, is born.

(Sorry, had no other option. :))

Re: Event of the Year
 

277

* Probus expels the Franks and Alamanni from Gaul.
* Probus reorganizes the defenses on the Rhine.

Re: Event of the Year
 

276

Emperor Marcus Claudius Tacitus slain by his own troops in Sicily.

Re: Event of the Year
 

275

# Roman Emperor Aurelian murdered by troops while preparing to invade Persia.
# September 25 - Marcus Claudius Tacitus appointed emperor by the senate against his will.

Re: Event of the Year
 

274

Germanic Peoples take advantage of the destroyed Roman armies of the Rhine. They pillage and depopulate large areas of Gaul, including Paris. The Rhine border is lost for 20 years. Franks live in the area of present southern Netherlands, northern Belgium and Rhineland from now on.

Re: Event of the Year
 

273

Phewww... Apparantly a lot happened in that year...

= Under the command of Emperor Aurelian, the Roman Army sacks the city of Palmyra.
= The kingdom of Palmyra is reunited with the Roman Empire.
= Aurelian refuses to wear the imperial crown and coat.
= Marcus Claudius Tacitus, future Roman Emperor, is consul in Rome.
= Tetricus I and Tetricus II are deposed as Gallic Emperors by Aurelian.
= Administrative reorganization of Italy. Aurelian adopts as permanent the reforms instituted by Caracalla.
= An Indian delegation visits Aurelian.

Re: Event of the Year
 

272

Palmyra is destroyed after a revolt, and Egypt is forced to subject to Roman rule.