Decades: 250s BC 240s BC 230s BC 220s BC 210s BC - **200s BC** - 190s BC 180s BC 170s BC 160s BC 150s BC

Years: 205 BC 204 BC 203 BC 202 BC 201 BC - **200 BC** - 199 BC 198 BC 197 BC 196 BC 195 BC

- Rome declares war upon Philip, king of Macedon.
- Roman forces defeat the Gauls of Cisalpine Gaul at Cremona
- Hannibal becomes Chief Magistrate of Carthage.
- The Bacchanalia are introduced in the Roman Empire. (approximate date)
- City of Tiwanaku founded near Lake Titicaca, in what is now modern Bolivia.
- Second Macedonian War begins

- Diophantus, Greek mathematician (approximate date of birth)