At length, towards the commencement of the sixteenth century, the Moorish kingdoms in Spain were overthrown, and a rage for conquests in Africa pervaded the Peninsula. Eastward of Morocco and Fez, Barbary was at that time divided into a number of small principalities, each consisting of a strong town with as much of the surrounding country as it could keep in subjection; the principal of them were Algiers, Bugia, Oran, Tunis, Telemsen and Tripoli. Against these places numerous expeditions were sent out from Spain which generally proved fruitless; however, some places on the coast were taken, among which was Tripoli, or Trablis, as it was then called. It fell into the hands of Ferdinand, the Catholic, in 1510; but his more politic successor, the emperor Charles the Fifth, probably not knowing what else to do with places so inconvenient, surrendered it twelve years afterwards, with the adjacent island of Malta, to the knights of St. John, who had just then been expelled from Rhodes by the mighty Sultan Solyman. Malta was a barren rock, and Tripoli had sunk from its former greatness, little remaining but its walls, its castle and its port. Both places were however capable of being strongly fortified, and the knights required nothing else; they therefore accepted the assignments, and applied all their energies to render their new habitations capable of resisting the shocks to which they would soon inevitably be exposed. The Turkish power was at this period in the zenith of its prosperity, and Europe again trembled as in the days of the immediate successors of Mahomet. The Mediterranean was swept by innumerable cruisers under its flag, commanded by daring and ferocious captains, who completely destroyed the commerce of christians in that sea, and made frequent descents on the coasts of Italy, Spain and the islands, which they plundered, carrying off the inhabitants for the purpose of extorting a ransom. Of these the most famous were Urudsch or Horuc, and his brother Chaireddin, successively dreaded in their day by the appellation of Barbarossa, or the _red beard_.