Complex sentence: Brigandage in the Two Sicilies had existed in some form since ancient times, however its origins as outlaws targeting random travellers would evolve vastly later on in the form of the political resistance movement.
Split into simpler sentences: Brigandage in the Two Sicilies had existed in some form since ancient times. However its origins as outlaws targeting random travellers would evolve, vastly later on in the form of the political resistance movement.