I'm not going to make a route to be used on this scenario, but the only point that should be kept is that the visigoths defeat any invasion of Hispania, be Frankish or Moor. The Visigoths may have coups, civil wars, changes of dynasty and all kind of crisis coming from desestabilization, but they cannot be conquered So, in a scenario that the Visigothic kingdom is not conquered by any foreign invader, what would be it's main differences from modern Spain? Could this result on a earlier colonization of america? What about North africa? If they defeat the moor invasions and resolve their internal crisis could they try to invade Morroco and Algeria?