Decades: 120s BC 110s BC 100s BC 90s BC 80s BC - 70s BC - 60s BC 50s BC 40s BC 30s BC 20s BC

Years: 79 BC 78 BC 77 BC 76 BC 75 BC - 74 BC - 73 BC 72 BC 71 BC 70 BC 69 BC

• Roman forces under Lucius Lucullus defeat the forces of Mithridates VI of Pontus in the Battle of Cyzicus.
• The last king of Bithynia bequeaths his kingdom to the Roman Senate upon his death.
• Quintus Opimius is prosecuted for overstepping his authority, and ruined by a conviction.