The Republic, in other words, was not just a political system. It was a complex set of interrelationships between politics, time, geography and the Roman cityscape. Dates were directly correlated with the elected consuls; years were marked by the nails hammered into the temple whose dedication was traced back to the first year of the new regime; even the island in the Tiber was a product, quite literally, of the expulsion of the kings. Underpinning the whole thing was one single, overriding principle: namely, freedom, or libertas.