Decades: 130s BC 120s BC 110s BC 100s BC 90s BC - **80s BC** - 70s BC 60s BC 50s BC 40s BC 30s BC

Years: 91 BC 90 BC 89 BC 88 BC 87 BC - **86 BC** - 85 BC 84 BC 83 BC 82 BC 81 BC

- First Mithridatic War - The Roman forces of Lucius Cornelius Sulla defeat the Pontic forces of Archelaus in the Battle of Chaerona.

**Deaths**