The commercial, economical, and pacific spirit was evident, both in England and Holland. On the other side, there was the strong will and infinite dexterity of William. In the last Partition Treaty he had betrayed this weakness of his position, and had given way to the skilled diplomacy of France. Lewis did not believe that he would prevail over the public opinion of his country. And if he did prevail, his position would be less formidable than before. Lewis now had Spain on his side, and all the dependencies of Spain. He also had Bavaria and Savoy. In the last war he had been unsuccessful at sea, and in the Irish expedition, which was carried on beyond the sea by his naval, not his military administration. In the coming war he would trust less to his fleet than to his troops, which had never been unsuccessful in a general action. He resolved to defy the Dutch and the English, and to seize every attainable advantage. The Spanish ambassador had exclaimed, "The Pyrenees have melted away." Lewis now announced that his grandson was not to renounce his right to the throne of France. In the Barrier Fortresses the Dutch held garrisons. Lewis sent them home and occupied the places himself. "Dutchmen were not wanted," he said, "to protect one Bourbon against the other." In August 1701 he obtained for French traders the asiento, the profitable and coveted monopoly in negro slaves. In September he prohibited English imports. Then, on the 16th, he did one thing more, one thing too much even for a nation of economists and calculators. The acceptance of the Spanish succession by France was the frustration of William's efforts during thirty years. He had striven and made war for peace and civilisation against wilful attack and the reign of force. That good cause was defeated now, and the security of national rights and international conventions was at an end. The craving for empire and the hegemony of Europe had prevailed. The temper of England compelled him, in April 1701, to acknowledge Philip of Anjou. The country, he said, could not understand the refusal to acknowledge a king welcomed by the whole of Spain. He advised the Emperor to have the German princes with him, and to begin the attack. He himself would arm meanwhile, and his own people, before long, would drive him into war. He relied on the arrogance of the French, and this calculation, the measures by which he brought public opinion on to his side, are the greatest achievement of his career.