What was the most likely dates France could have fallen to Islamic conquerors and how long could they have held it?
721 seems the most obvious. The Battle of Toulouse pretty much ended all hopes for further expansion into Europe. If the battle had been won would it wouldn't have led directly to the conquest of France, but it would have deprived Charles Martel of veteran soldiers and even his power in the region later on at the Battle of Tours.
Some have argued Muslim gains were already pretty much at the limit of their expansion.
721 seems the most obvious. The Battle of Toulouse pretty much ended all hopes for further expansion into Europe. If the battle had been won would it wouldn't have led directly to the conquest of France, but it would have deprived Charles Martel of veteran soldiers and even his power in the region later on at the Battle of Tours.
Some have argued Muslim gains were already pretty much at the limit of their expansion.