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FLORENCE AND THE MEDICI
Di Firenze in prima si divisono intra loro i nobili, dipoi i nobili e il popolo, e in ultimo il popolo e la plebe; e molte volte occorse che una di queste parti rimasa superiore, si divise in due.—MACHIAVELLI.
I
Florence, like all Italian cities, owed her independence to the duel of the Papacy and Empire. The transference of the imperial authority beyond the Alps had enabled the burghs of Lombardy and Tuscany to establish a form of self-government. This government was based upon the old municipal organisation of duumvirs and decemvirs. It was, in fact, nothing more or less than a survival from the ancient Roman system. The proof of this was, that while vindicating their rights as towns, the free cities never questioned the validity of the imperial title. Even after the peace of Constance in 1183, when Frederick Barbarossa acknowledged their autonomy, they received within their walls a supreme magistrate, with power of life and death and ultimate appeal in all decisive questions, whose title of Potesta indicated that he represented the imperial power—Potestas. It was not by the assertion of any right, so much as by the growth of custom, and by the weakness of the Emperors, that in course of time each city became a sovereign State. The theoretical supremacy of the Empire prevented any other authority from taking the first place in Italy. On the other hand, the practical inefficiency of the Emperors to play their part encouraged the establishment of numerous minor powers amenable to no controlling discipline.