Zirid Crusade (Harald's England)

The Zirid Crusade (Sometimes called the Mahdia Expedition) was a war against the Zirid Dynasty launched by the newly founded League of the Tyrrhenean.

Causes
The invasion of Tunisia was probably prompted by the piratical raids of Mahdia's rule Tamin in Italian waters, as well as his involvement in southern Italy fighting the Norman invasion.

Greed also motivated the invasion; promised plunder was immense. There was also an ideological element to the invasion; the indulgences granted by the Pope to the League and their fighting under the banner of Saint Paul would lead the invasion of Tunisia to be classified as a crusade by later historians.

The Crusade was backed by Matilda of Tuscany and led by Hugh of Pisa.