Centuries: 4th century BC - 3rd century BC - 2nd century BC

Decades: 310s BC 300s BC 290s BC 280s BC 270s BC - 260s BC - 250s BC 240s BC 230s BC 220s BC 210s BC

Years: 270 BC 269 BC 268 BC 267 BC 266 BC - 265 BC - 264 BC 263 BC 262 BC 261 BC 260 BC

Events

• Archimedes, Greek mathematician, develops screw, specific gravity
• Velzna, the last Etruscan city subdued by the Romans
• Acrotatus succeeds his father Areus I as king of Sparta

Births

• Apollonius of Perga, mathematician

Deaths