[Whispering Smith]

"Same people ~ two religions. This happened to the Serbo-Croations as well."
Are you attempting to compare the Eastern Orthodox and Roman Catholic split to the Christian Mohammedan differences?

[muawiyah]

You were aware, of course, that the Serbo-Croations were "split" by several events ~ the division/redivision of the Roman Empire (and that is later reflected in the Roman/Orthodox dichotomy within Christian belief) AND, later on, by the Turkish invasions and conquests.

Some ended up Christian and some ended up Moslem.

In both senses, the Spanish historical situation is very comparable. First, due to changes in head of state (in the small kingdoms period, which is the greater part of Spanish history since the first Moslem conquest of the place), some ended up Christian and others ended up Moslem.

You probably thought I was going to equate one or the other of the two major brands of Christian ecclesiastical authority to the Moslems didn't you.

Remember that both Spain and the Balkans are "border regions" between and part of different ancient empires, language groups, and religious persuasions.