Before Charles of France passed into Italy, that country was under the control of the Pope, the Venetians, the King of Naples, the Duke of Milan, and the Florentines. Two chief objects had to be kept in view by all these powers: first, that no armed foreigner should be allowed to invade Italy; second, that no one of their own number should be suffered to extend his territory. Those whom it was especially needed to guard against, were the Pope and the Venetians. To hold back the Venetians it was necessary that all the other States should combine, as was done for the defence of Ferrara; while to restrain the Pope, use was made of the Roman Barons, who being divided into two factions, the Orsini and Colonnesi, had constant cause for feud with one another, and standing with arms in their hands under the very eyes of the Pontiff, kept the Popedom feeble and insecure.