Decades: 270s BC 260s BC 250s BC 240s BC 230s BC - **220s BC** - 210s BC 200s BC 190s BC 180s BC 170s BC

Years: 228 BC 227 BC 226 BC 225 BC 224 BC - **223 BC** - 222 BC 221 BC 220 BC 219 BC 218 BC

- Antiochus III the Great succeeds his older brother Seleucus III Ceraunus as king of the Seleucid dynasty.
- State of Qin conquered the state of Chu in China.

- Seleucus III Ceraunus, King of the Seleucid dynasty. (assassinated)