And not in vain! For year by year the national opposition to Spain gathered force. Products seeking markets and capital seeking investment were increasing, while opportunities for profit abroad were diminishing. Merchant and capitalist were everywhere confronted by the monopoly of Spain and Portugal, and thus the maritime and commercial supremacy of the queen's chief enemy was at once a national menace and a private grievance. English Protestants, driven into exile in the days of "Bloody Mary," returned in the time of Elizabeth, bringing back the spirit of Geneva, and imbued with an uncompromising hatred of Papists which was fanned to white heat by the Jesuit plots, supposed to be inspired by Philip himself, against the queen's life. The rising opposition to Spain thus took on the character of a crusade: for statesmen it was a question of independence; for merchants a question of profits; for the people a question of religion. And so it happened that in time of peace the ships of Spain were regarded as fair prize. When piracy wore the cloak of virtue there were many to venture; and the queen was ready to reward the buccaneer for the crimes that made him a popular hero. Cautious in her purposes, devious in her methods, too frugal and too poor to embark on great undertakings or open hostility, Elizabeth encouraged every secret enterprise and every private adventure which had for its object the enrichment of her subjects at the expense of the common enemy. John Hawkins will ever be memorable as the man who first openly contested the double monopoly of Spain and Portugal, and taught English merchants "how arms might signally help the expansion of trade." Descended from seafaring ancestors, his own apprenticeship was served in voyages to the African coast. Negroes were plentiful there, and laborers scarce in the West Indies. Well considering that the slave trade would insure the salvation of the benighted heathen and redound to the profit of thrifty planters, the devout Hawkins set about serving God and mammon for the advancement of his own fortunes and the glory of England. With capital supplied by City merchants, three vessels were equipped; and in 1562 Hawkins sailed for Sierra Leone, where he procured by force or purchase three hundred negroes, who were exchanged with no great difficulty at Hispaniola for a rich cargo of merchandise. An enterprise which netted sixty per cent profit was not to be abandoned, and in 1564 a second voyage was made, with greater profit still. But the third voyage, in 1567, came to grief at San Juan de Ulloa, where Hawkins fell in with the Spanish plate fleet. The fleet might have been plundered, but the naive Hawkins, relying in vain upon the pledged word of the Spaniards, was treacherously attacked and his ships mostly destroyed, while he himself barely escaped with his life.