Excerpts from Books and Wikipedia
"The English alliance which William III had cemented in 1689 was simultaneously the saving of the United Provinces and a substantial contributory factor in its decline as an independent great power—in rather the same way in which, over two hundred years later, Lend-Lease and the United States alliance would both rescue and help undermine a British Empire which was fighting for survival under Marlborough’s distant relative Winston Churchill." [Kennedy: Great Powers, p. 87-8] " A Protestant, he participated in several wars against the powerful Catholic King Louis XIV of France, in coalition with Protestant and Catholic powers in Europe. Many Protestants heralded him as a champion of their faith. In 1685, his Catholic uncle and father-in-law became King of England, Scotland and Ireland. James's reign was unpopular with the Protestant majority in Britain, who feared a revival of Catholicism. Supported by a group of influential British political and religious leaders, William invaded England in what became known as the Glorious Revolution. On 5 November 1688, he landed at the south-western English port of Brixham. Shortly afterwards, James was deposed." [Wikipedia] "So when shortly afterwards ‘the immortal seven’ English grandees invited William over to liberate them from the Jacobite yoke, he was able to win the support of the States of Holland without which he could have done nothing. The French threat that a Dutch landing in England would be regarded as a declaration of war was ignored. This marked the beginning of the ‘Second Hundred Years War’ which was to end only on the battlefield of Waterloo 127 years later." [Blanning: Pursuit of Glory, p. 544-5]