222 BC
| Years |
|---|
| Millennium |
| 1st millennium BC |
| Centuries |
| Decades |
|
| Years |
Events
By place
Greece
- Cleomenes III is defeated and the Spartan army annihilated by the Achaean League and the Macedonians in the Battle of Sellasia.
- Ptolemy IV succeeds his father Ptolemy III as king of Egypt.
Rome
- Marcus Claudius Marcellus leads the Romans to victory in the Battle of Clastidium, conquering the area later known as Cisalpine Gaul.
- The Romans capture Milan.
Asia
- State of Qin conquers the state of Yan and defeats the last defensive forces of the state of Zhao in China .
Deaths
- Ptolemy III Euergeter I, king of Egypt
- Ctesibius, mathematician