Was there any chance of the Gallic Empire and/or Palmyrene Empire surviving? Also would their survival ensure the collapse of Rome or would it still be able to recover from the Crisis of the Third Century?
neither of them existed though.. Palmyran empire on your map was lands controlled by Ptolemaic Egypt and Seleucid. Gauls were never a united empire .. is this meant to be hypothetical?
there are differing acocunts, some say she was taken hostage and died before she was paraded in the triumph others say she got mercy on account of her sweet sweet ass and pretty face, going on to marry a senator no one remembers.
The Gallic Empire was a collection of Roman provinces that broke away from the Empire in and around 260 AD and organized themselves as a separate empire under the Roman general Postumus. The Gallic Empire remained strong until Postumus' death in 268 or 269 AD and it kept only a precarious hold on independence from the true Roman Empire. It was brought back into the Empire by Aurelian in 274 with a victory at Campus Mauriacus. But this was a phyric victory, both the Gallic empire and the Roman empire took heavy loses at the battle and the defenses of the Rhine were abandoned, allowing successive waves of German barberians.
Colonia Agrippina, once the capital of the Gallic Empire, was looted. Most other Roman forts and colonies in Germania were burned to the ground; Germanic raiders then pillaged well into Gaul.