Centuries: 4th century BC - 3rd century BC - 2nd century BC
Decades: 300s BC 290s BC 280s BC 270s BC 260s BC - 250s BC - 240s BC 230s BC 220s BC 210s BC 200s BC
Years: 255 BC 254 BC 253 BC 252 BC 251 BC - 250 BC - 249 BC 248 BC 247 BC 246 BC 245 BC
Events
- Bactria gains its independence from the Seleucid Empire. (approximate date)
- Antiochus II Theos makes peace with Ptolemy II of Egypt.
- Xiao Wen Wang becomes King of the Qin Dynasty of China but dies before the end of the year.
- First Punic War: Lucius Caecilius Metellus captures 140 war elephants in Sicily, transports them to Rome and displays them in the Circus Maximus.
- Marcus Atilius Regulus, Roman general and consul
- Timaeus, Greek historian
- Erasistratus, Greek anatomist (approximate date)
- Zhao Xiang Wang, King of the Qin Dynasty of China.
- Xiao Wen Wang, King of the Qin Dynasty of China.