Just wondered about a few things:
At some point whether during the medieval era or much later, does the Norman government of Egypt resurrect the canal that used to connect the Nile Delta with the Red Sea? I realise that the Abbasid Caliph al-Mansour discontinued it during the eighth century, but perhaps such an idea could be given support by the the Italian merchant republics who would probably love to get their own ships through to India.
The Prince Palatinate of Jerusalem. Does that develop into some kind of hereditary regency in Jerusalem, or is the office only reserved for royalty?
When it comes to the Colonial Era, and since its too far from America, would Egypt be among the first to colonize and conquer the lands further down the Nile, or will it's foreign interests remain fixed in the Mediterrenean?
Once Spain is reconquered, perhaps either the Italian States, such as Genoa, or even the Kingdom of Sicily might capture Cordoba as a province or protectorate, and later use it as a launch point for shipping to the Americas?