550bc: In Spain, the first rotary quern (grinding stone) is used.

773: Siege of Pavia: Charlemagne besieges Pavia, which is poorly stocked with food. King Desiderius
remains in the capital, and orders his son Adalgis to defend Verona to guard Gerberga, and the children
of Carloman I. After a short siege, Adalgis flees to Constantinople, where he is received by Emperor
Constantine V. Meanwhile, the Franks capture the cities of Verona and Mortara

790: King AEthelred I returns to Northumbria, and is restored to the throne after living in exile
for 11 years. His rival Osred II is deposed, forcibly tonsured, and exiled to the Isle of Man.AEthelred
then faces a rebellion by another rival, named Eardwulf. The latter is captured, and hanged outside
the gates to Ripon Abbey. The body is taken into the abbey, where Eardwulf recovers and escapes
to exile.

820: Emperor Leo V (the Armenian) is assassinated by conspirators in the Hagia Sophia, at Constantinople.
Though unarmed, he fights back fiercely but dies of his wounds.

836: Danish Vikings arrive in West Saxon, North Devon and Somerset. King Egbert of Wessex fights
them at the Battle of Carhampton, but he is forced to withdraw.

860: Viking raiders led by Weland sail to England and attack Winchester (the capital of Wessex),
which is set ablaze. He spreads inland, but is defeated by West Saxon forces, who deprive him all
he has gained.

35: The Aeolipile, a simple steam turbine is recorded by Hero of Alexandria.