Pisa had given early proofs of their maritime energy, and fixed themselves, in succession to the Saracens, in the Balearic Isles, Sardinia, and Corsica. Sea-power was the Themistoclean instrument with which they made a small state into a great one.

[Footnote 29: _Ital.Republics, English ed., p. 29.]

A fertile source of dispute between states is the acquisition of territory beyond sea. As others have done before and since, the maritime republics of Italy quarrelled over this. Sea-power seemed, like Saturn, to devour its own children. In 1284, in a great sea-fight off Meloria, the Pisans were defeated by the Genoese with heavy loss, which, as Sismondi states, 'ruined the maritime power' of the former. From that time Genoa, transferring her activity to the Levant, became the rival of Venice, The fleets of the two cities in 1298 met near Cyprus in an encounter, said to be accidental, that began 'a terrible war which for seven years stained the Mediterranean with blood and consumed immense wealth.' In the next century the two republics, 'irritated by commercial quarrels'—like the English and Dutch afterwards—were again at war in the Levant. Sometimes one side, sometimes the other was victorious; but the contest was exhausting to both, and especially to Venice. Within a quarter of a century they were at war again. Hostilities lasted till the Genoese met with the crushing defeat of Chioggia. 'From this time,' says Hallam, 'Genoa never commanded the ocean with such navies as before; her commerce gradually went into decay; and the fifteenth century, the most splendid in the annals of Venice, is till recent times the most ignominious in those of Genoa.' Venice seemed now to have no naval rival, and had no fear that anyone could forbid the ceremony in which the Doge, standing in the bows of the Bucentaur, cast a ring into the Adriatic with the words, _Desponsamus_te,_Mare,_in_signum_veri_perpetuique_dominii_. The result of the combats at Chioggia, though fatal to it in the long-run, did not at once destroy the naval importance of Genoa. A remarkable characteristic of sea-power is the delusive manner in which it appears to revive after a great defeat. The Persian navy occasionally made a brave show afterwards; but in reality it had received at Salamis a mortal wound. Athens seemed strong enough on the sea after the catastrophe of Syracuse; but, as already stated, her naval power had been given there a check from which it never completely recovered. The navy of Carthage had had similar experience; and, in later ages, the power of the Turks was broken at Lepanto and that of Spain at Gravelines notwithstanding deceptive appearances afterwards. Venice was soon confronted on the sea by a new rival. The Turkish naval historian, Haji Khalifeh,[30] tells us that, 'After the taking of Constantinople, when they [the Ottomans] spread their conquests over land and sea, it became necessary to build ships and make armaments in order to subdue the fortresses and castles on the Rumelian and Anatolian shores, and in the islands of the Mediterranean.' Mohammed II established a great naval arsenal at Constantinople. In 1470 the Turks, 'for the first time, equipped a fleet with which they drove that of the Venetians out of the Grecian seas.'[31] The Turkish wars of Venice lasted a long time. In that which ended in 1503 the decline of the Venetians' naval power was obvious. 'The Mussulmans had made progress in naval discipline; the Venetian fleet could no longer cope with theirs.' Henceforward it was as an allied contingent of other navies that that of Venice was regarded as important. Dyer[32] quotes a striking passage from a letter of Æneas Sylvius, afterwards Pope Pius II, in which the writer affirms that, if the Venetians are defeated, Christendom will not control the sea any longer; for neither the Catalans nor the Genoese, without the Venetians, are equal to the Turks.

[Footnote 30: _Maritime_Wars_of_the_Turks_, Mitchell's trans., p. 12.]

[Footnote 31: Sismondi, p. 256.]

[Footnote 32: _Hist.Europe, i. p. 85.]

SEA-POWER IN THE SIXTEENTH AND SEVENTEENTH CENTURIES

The last-named people, indeed, exemplified once more the rule that a military state expanding to the sea and absorbing older maritime populations becomes a serious menace to its neighbours. Even in the fifteenth century Mohammed II had made an attack on Southern Italy; but his sea-power was not equal to the undertaking. Suleymân the Magnificent directed the Ottoman forces towards the West. With admirable strategic insight he conquered Rhodes, and thus freed himself from the danger of a hostile force on his flank. 'The centenary of the conquest of Constantinople was past, and the Turk had developed a great naval power besides annexing Egypt and Syria.'[33] The Turkish fleets, under such leaders as Khair-ad-din (Barbarossa), Piale, and Dragut, seemed to command the Mediterranean including its western basin; but the repulse at Malta in 1565 was a serious check, and the defeat at Lepanto in 1571 virtually put an end to the prospect of Turkish maritime dominion. The predominance of Portugal in the Indian Ocean in the early part of the sixteenth century had seriously diminished the Ottoman resources. The wealth derived from the trade in that ocean, the Persian Gulf, and the Red Sea, had supplied the Mohammedans with the sinews of war, and had enabled them to contend with success against the Christians in Europe. 'The main artery had been cut when the Portuguese took up the challenge of the Mohammedan merchants of Calicut, and swept their ships from the ocean.'[34] The sea-power of Portugal wisely employed had exercised a great, though unperceived, influence. Though enfeebled and diminishing, the Turkish navy was still able to act with some effect in the seventeenth century. Nevertheless, the sea-power of the Turks ceased to count as a factor of importance in the relations between great states.

[Footnote 33: Seeley, _British_Policy_, i. p. 143.]

[Footnote 34: Whiteway, p. 2.]

In the meantime the state which had a leading share in winning the victory of Lepanto had been growing up in the West. Before the union of its crown with that of Castile and the formation of the Spanish monarchy, Aragon had been expanding till it reached the sea. It was united with Catalonia in the twelfth century, and it conquered Valencia in the thirteenth. Its long line of coast opened the way to an extensive and flourishing commerce; and an enterprising navy indemnified the nation for the scantiness of its territory at home by the important foreign conquests of Sardinia, Sicily, Naples, and the Balearic Isles. Amongst the maritime states of the Mediterranean Catalonia had been conspicuous. She was to the Iberian Peninsula much what Phoenicia had been to Syria. The Catalan navy had disputed the empire of the Mediterranean with the fleets of Pisa and Genoa. The incorporation of Catalonia with Aragon added greatly to the strength of that kingdom. The Aragonese kings were wise enough to understand and liberal enough to foster the maritime interests of their new possessions.[35] Their French and Italian neighbours were to feel, before long, the effect of this policy; and when the Spanish monarchy had been consolidated, it was felt not only by them, but by others also. The more Spanish dominion was extended in Italy, the more were the naval resources at the command of Spain augmented. Genoa became 'Spain's water-gate to Italy…. Henceforth the Spanish crown found in the Dorias its admirals; their squadron was permanently hired to the kings of Spain.' Spanish supremacy at sea was established at the expense of France.[36] The acquisition of a vast domain in the New World had greatly developed the maritime activity of Castile, and Spain was as formidable on the ocean as in the Mediterranean. After Portugal had been annexed the naval vessels of that country were added to the Spanish, and