What happened 275 AD

The deaths of the Sassanid Kings Shapur I (272) and Hormizd I (273) in quick succession, and the rise to power of a weakened ruler (Bahram I), presented an opportunity to attack the Sassanid Empire, and in 275 Aurelian set out for another campaign against the Sassanids. On his way, he suppressed a revolt in Gaul—possibly against Faustinus, an officer or usurper of Tetricus—and defeated barbarian marauders in Vindelicia (Germany).

However, Aurelian never reached Persia, as he was murdered while waiting in Thrace to cross into Asia Minor. As an administrator, he had been strict and had handed out severe punishments to corrupt officials or soldiers. A secretary of his (called Eros by Zosimus) had told a lie on a minor issue. In fear of what the emperor might do, he forged a document listing the names of high officials marked by the emperor for execution and showed it to collaborators. The notarius Mucapor and other high-ranking officers of the Praetorian Guard, fearing punishment from the emperor, murdered him in September 275, in Caenophrurium, Thrace. Aurelian's enemies in the Senate briefly succeeded in passing damnatio memoriae on the emperor, but this was reversed before the end of the year, and Aurelian, like his predecessor Claudius II, was deified as Divus Aurelianus.

Tacitus, after ascertaining the sincerity of the Senate's regard for him, accepted their nomination on 25 September 275, and the choice was cordially ratified by the army. This was the last time the Senate elected a Roman Emperor.

Pyrrhus engaged the Romans despite the lack of Samnite support. The two consuls for 275 BC, Lucius Cornelius Lentulus Caudinus and Manius Curius Dentatus, were fighting in Lucania and Samnium respectively.

The consul Manius Curius Dentatus expelled a contingent in Croton and seized the city.

The Battle of Beneventum was the last battle of the Pyrrhic War. It was fought near Beneventum, in southern Italy, between the forces of Pyrrhus, king of Epirus in Greece, and the Romans, led by consul Manius Curius Dentatus. The result was a Roman victory and Pyrrhus was forced to return to Tarentum, and later to Epirus.

When Pyrrhus returned to Italy in 275 BC, he fought the Battle of Beneventum against the Romans, which was to be the last battle of the war.

In 275, Pyrrhus left the island before he had to face a full-scale rebellion. He returned to Italy, where his Samnite allies were on the verge of losing the war, despite their earlier victory at the Cranita hills.