Just how much interaction was there between Christian Europe (Spain, France, Britain, Italy) and the Muslim civilization of Al-Andalus (Spain)? Was there a lot of trade and inter-migration, or did the two spheres isolate themselves from one another?
I am asking this for my Ethelred the Pious TL. England is overrun with Vikings beginning in the 870s, and one butterfly is that the Christian states of Spain remain very small and weak, and Spain remains Muslim in the south, mixed in the north.
If the Christian states are not trading with the rich cities of Al-Andalus, then the pagans in England are situated very well to monopolize the trade between Spain and the rest of Europe. By the 1000s many English Scandinavians are going to be converting from paganism... if by then England has strong commercial relations to Spain, they might be converting to Islam!
If, however, there was lively trade between Al-Andalus and, for example, Italy and France, then the Anglo-Norse have no comparative advantage.
I am asking this for my Ethelred the Pious TL. England is overrun with Vikings beginning in the 870s, and one butterfly is that the Christian states of Spain remain very small and weak, and Spain remains Muslim in the south, mixed in the north.
If the Christian states are not trading with the rich cities of Al-Andalus, then the pagans in England are situated very well to monopolize the trade between Spain and the rest of Europe. By the 1000s many English Scandinavians are going to be converting from paganism... if by then England has strong commercial relations to Spain, they might be converting to Islam!
If, however, there was lively trade between Al-Andalus and, for example, Italy and France, then the Anglo-Norse have no comparative advantage.