Centuries: 4th century BC - 3rd century BC - 2nd century BC
- Marcus Claudius Marcellus leads the Romans to victory in the Battle of Clastidium, conquering the area later known as Cisalpine Gaul.
- Cleomenes III defeated and the Spartan army annihilated by Achaeus, general of Antiochus III the Great in the Battle of Sellasia.
- Ptolemy IV succeeds his father Ptolemy III as king of Egypt.
- State of Qin conquered the state of Yan and defeated the last defensive forces of the state of Zhao in China .