For the next six or seven years the life of the Prince of Orange was to be unmarked by any striking external incidents. He was occupied with all his wonted patience in the reparation of the mischiefs of the Treaty of Nimeguen, and in the laborious construction of that great European league by means of which he was afterwards destined to arrest the course of French aggression. In this undertaking, and in watching and retaliating upon the encroachments which Louis XIV., almost on the morrow of the treaty, began making upon its provisions, William was sufficiently employed. In 1684 these encroachments became intolerable. Louis having vainly demanded of the Spaniards certain towns in Flanders, on the pretext of their being rightful dependencies on places ceded to him by the Treaty of Nimeguen, seized Strasbourg and besieged Luxembourg in physical enforcement of his claim. Spain declared war, and William, though thwarted by the States (mainly through the instrumentality of the city of Amsterdam, which was always ill-disposed towards him), and denied the levy of 16,000 men which he had asked for, took the field notwithstanding in support of his Spanish ally. The united forces, however, were too weak to effect much. Luxembourg speedily surrendered, and as the result a twenty years' truce, on terms not very favourable for William, was concluded with France. During this period, as always, affairs in England no doubt demanded general vigilance; but it was not till 1685 that they showed signs of becoming critical. The death of Charles, and the known designs of Monmouth, placed William in a very delicate position. During Charles's life-time he had extended his protection to the exiled Duke, and had even insisted so punctiliously on proper respect being shown to him, that a difference had arisen between William and the English Court with reference to the Duke's receiving salutes from the English troops, and was actually unadjusted at Charles's death. Upon James's accession, however, either to clear himself of all suspicion of abetting a pretender to the throne, or, as some have asserted, to thwart the new king's design of having his nephew seized and sent a prisoner to England, William procured his departure from Dutch territory. Monmouth retired to Brussels, but at the instance of James, who wrote a letter to the Governor of the Spanish Netherlands charging him with high treason, he was ordered by that functionary to quit the King of Spain's dominions, and returned to Holland. Then followed his ill-fated enterprise, throughout the brief course of which William maintained an attitude of strict loyalty towards his father-in-law. He not only despatched the six English and Scotch regiments in the Dutch service to assist in suppressing the insurrection, but he offered, if James wished, to take command of the royal troops in person. The offer was declined, very likely from motives of suspicion by the King, but it is impossible