AD

The Crimean War begins.

Caligula is assassinated as a result of his extravagance and quest for unconstrained personal power.

Treaty of Verdun is signed and divides the current Frankish Empire into 3 (east of Rhine, France and then Italy, Provence, Burgundy and Lorraine.).

Nader Shah assassinated.

The seed-drill is invented by Jethro Tull.

Mongols destroy Baghdad.

Hong Kong is returned to China from the UK.

Canute IV of Denmark is assassinated.

Alexander Severus becomes the new Emperor of Rome.

The Communist party lead by Mao Zedong comes to power in China.