Decades: 370s BC 360s BC 350s BC 340s BC 330s BC - **320s BC** - 310s BC 300s BC 290s BC 280s BC 270s BC

331 BC 330 BC 329 BC 328 BC 327 BC - **326 BC** - 325 BC 324 BC 323 BC 322 BC 321 BC

- Battle of the Hydaspes, Alexander the Great defeats the Indian King Porus