Well, if we screw plausibility, then Spartacus obviously sets up a networkl of united tribes in Europe and introduces delegsate representation at its Althing. Then, under the red and white striped banner of the slave rebellion (symbolising innocence and blood, the pattern chosen to reflect the stripes of the whip on the labouring back), they conquer Greece and the East to liberate suffering humanity. Spartacus, re-elected consul throughout his life, dies after the fall of Egypt, but his elected successors continue the tradition, adding ever new liberated territory to the realm of freedom and a silver star to the blue top of the flag for each victory. By the time Christ is born, their armies have reached China. In 45 AD, Jesus is elected their consul.