The exclusive rights conferred by the Pope were rigorously enforced by Spain and Portugal. Navigation to their new possessions, or the carrying on of any trade or commerce with them, without royal license was made punishable by death and confiscation of goods.[193] Early in her reign Elizabeth had occasion to protest against the claims of Portugal, and had a heated dispute with King Sebastian about them.[194] Later, the daring exploits of Drake on the Spanish seas were more than a flagrant violation of Philip’s pretension to _mare clausum_ in the western Atlantic and the Pacific Oceans--a claim which Elizabeth refused to recognise. When Mendoza, the Spanish ambassador, complained to her in 1580 of Drake’s depredations, and that English ships presumed to trade in the “Indian” seas, he was told in effect that the Spaniards, contrary to the Law of Nations, had prohibited the English from carrying on commerce in those regions, and had consequently drawn the mischief upon themselves. She was unable to understand, she said, why her subjects and those of other princes should be barred from the “Indies.” She could not recognise the prerogative of the Bishop of Rome “that he should bind princes who owe him no obedience,” and her subjects would continue to navigate “that vast ocean,” since “the use of the sea and air is common to all; neither can any title to the ocean belong to any people or private man, forasmuch as neither nature nor regard of the public use permitteth any possession thereof.”[195] About the time when Drake left England, the question of the right of Spain to forbid the English to trade to the Indies had been considered. It was argued that the Pope’s bull was void, for several reasons. The consent of the Pope had been conditional for the conversion of the natives, while the “usage of the Spaniards hath been otherwise.” The bull could have no force in tending to the prejudice of a third party, because all princes by the Law of Nations had the right of navigation in the sea and the right of traffic, and the Pope could not deprive them of these rights. Besides, there had been agreements between Spain and England since the date of the bull that the subjects of each state might freely traffic in the dominions of the other; and the Spanish lawyers had come to the conclusion that the Venetians could not legally inhibit others from trading in the Adriatic, and therefore, by the same reasoning, neither could the Spaniards or Portuguese prohibit orderly and lawful traffic to their Indies.[196] Elizabeth has been charged with inconsistency on the ground that at the time when she was asserting the freedom of the seas against the claims of Spain she was claiming for herself, “with very great energy,” a similar dominion in the British seas.[197] The charge is quite unfounded. No claim was put forward by her to the sovereignty of the British seas. On the contrary, they were declared to be free for the navigation and fishery of all nations.