So, let's say the Umayyads are victorious in the Battle of Covadonga of 722 AD, and Pelagius's rebellion fails. The Umayyads now have control over all of Iberia. What effects does this have? Is Iberia doomed to being slowly Islamized, or would a future successful Christian rebellion and ultimate reconquista be likely?
What are the effects on other parts of Europe, both in the immediate future and the long term?