The steps taken to build up the navy in the decade or more preceding the Armada were well justified by the political and religious strife in western Europe and the dangers which on all sides threatened the English realm. France, the Netherlands, and Scotland were torn by religious warfare. In England the party with open or secret Catholic sympathies was large, amounting to perhaps half the population, the strength of whose loyalty to Elizabeth it was difficult to gage. Since 1568 Elizabeth had held captive Mary Queen of Scots, driven out of her own country by the Presbyterian hierarchy, and a Catholic with hereditary claims to the English throne. Before her death, Philip of Spain had conspired with her to assassinate the heretic Elizabeth; after Mary's execution in 1587 he became heir to her claims and entered the more willingly upon the task of conquering England and restoring it to the faith. For years, in fact, there had been a state of undeclared hostility between England and Spain, and acts which, with sovereigns less cautious and astute than both Elizabeth and Philip, would have meant war. In 1585 Elizabeth formed an alliance with the Netherlands, and sent her favorite, Leicester, there as governor-general, and Sir Philip Sidney as Governor of Flushing, which with two other "cautionary towns" she took as pledges of Dutch loyalty. The motives for this action are well stated in a paper drawn up by the English Privy Council in 1584, presenting a situation interesting in its analogy to that which faced the United States when it entered the World War: "The conclusion of the whole was this: Although her Majesty should thereby enter into the war presently, yet were she better to do it now, while she may make the same out of her realm, having the help of the people of Holland, and before the King of Spain shall have consummated his conquest of those countries, whereby he shall be so provoked by pride, solicited by the Pope, and tempted by the Queen's own subjects, and shall be so strong by sea; and so free from all other actions and quarrels--yea, shall be so formidable to all the rest of Christendom, as that her Majesty shall no wise be able, with her own power, nor with the aid of any other, neither by land nor sea, to withstand his attempts, but shall be forced to give place to his insatiable malice, which is most terrible to be thought of, but miserable to suffer." These were the compelling reasons for England's entry into the war. The aid to Holland and the execution of Mary, on the other hand, were sufficient to explain Philip's attempted invasion. The grievance of Spain owing to the incursions of Hawkins and Drake into her American possessions, and England's desire to break Spain's commercial monopoly, were at the time relatively subordinate, though from a naval standpoint the voyages are interesting in themselves and important in the history of sea control and sea trade. _Hawkins and Drake_