Milestones

Portugal agrees to return Macao to China in 1999.

Peter is the sole ruler of Russia.

A new Persian empire is founded by Ardashir.

Albert Einstein publishes his theory of special relativity.

John the Baptist executed.

Constantine unites all of Rome and issues the Edict of Milan. The “Edict of Toleration” is proclaimed and Constantine allows Christianity in his kingdom.

Start of the Spanish Civil War.

Crusaders take Jerusalem.