Complex sentence: Battle of Tours (October 10,732, between Tours and Poitiers), but this is highly problematic: for even had the Arabs won at Toulouse, they still would have had to conquer the Franks to have retained control of the region.
Split into simpler sentences: Battle of Tours (October 10,732, between Tours and Poitiers). This is highly problematic, however, because even had the Arabs won at Toulouse, they still would have had to conquer the Franks to have retained control of the region.