Answer:
-Pope Leo IX ascends to the papacy.
-England is invaded by William the Conqueror. He subsequently becomes King after victory in the Battle of Hastings.
-First Crusade. Under the urging of Pope Urban II, Jerusalem is retaken from the Muslims. Christians assumes its control.
-Tower of London's construction commences. It's deemed property of the British empire.
-Avicenna, of Persia, sets a standard medical text later to be known as 'The Canon Of Medicine'.
