After Charles II died, in 1685, his Catholic brother took the throne as James II. Charles had had numerous children by various mistresses, but his own wife, Catherine of Braganza, had proved incapable of carrying a pregnancy to term. Charles had himself promised his paymaster, Louis XIV, that he would convert to Catholicism at some point, but there is no sign he ever did so. James, on the other hand, was an ardent Catholic. This irritated Charles, who knew better than to take religion too seriously, and he insisted that James raise his two daughters, Mary and Anne, as Protestants, and it is as Protestants that each would become Queen.
But it isn't just that James II was a Catholic, though that aroused the most passionate popular opposition. He was also an absolutist, who wanted to recentralize power and push back against Parliament.
A slight detour to New England
Here in New England, where I live, this led to the creation of the Dominion of New England, on the model of the Viceroyalty of New Spain (when an English King copies the administrative structures of Spain, you know you've got trouble), unifying the Mid-Atlantic and New England colonies under the notorious Governor Edmund Andros.
For years there was a diner on Trapelo Rd. in Belmont, MA, called the Andros Diner. I presume it was named after the Cycladic island by its Greek proprietors, not the Governor, but it always seemed a bit tone deaf. I'm pretty sure children are no longer taught to execrate the tyrannical Andros (my children certainly seem pretty indifferent), but this attempt to revoke the colonial charters and centralize the administration of the colonies was part of the long history that led to the Revolution.
But Kishlansky, despite teaching at Harvard, spent no time at all on New England in his book. But what Andros, at James's orders, attempted in New England, James tried himself in old England. Stuarts could never stand alternative centers of power, but were never effectual in manipulating and co-opting them. Instead, they just tried to squash them, which led to one execution and one deposition among the six Stuart monarchs, along with a lot of political chaos for the rest, not a sterling record.
None dare call it treason
Angry at James, and worried that he would have a male heir with his second wife, the Catholic Mary of Modena, a substantial group of wealthy and powerful men, already being called Whigs (we'll see a lot more of them when I get to the reign of Anne), conspired to replace him with a foreign but Protestant monarch, William of Orange, the ruler of the Netherlands, with which England had fought three wars between 1654 and 1672. It definitely helped that he was married to James's Protestant daughter Mary, and that she would become Queen.
One reason the politics of ancient Greek city states were so volatile was that the wealthy of a city felt more connected to the wealthy of another than they did with the politically violent rabble in their own home town. And while the Greek poleis all shared a common culture, language, and contempt for all those losers in the world who who would never have the right to compete in the Olympic games, going to other cities to get help in internal political conflicts didn't seem like that big a deal, and it happened fairly frequently. For example, before Athens was a democracy, Sparta intervened to help depose the tyrant Hippias and (unsuccessfully) try to install someone they liked better. Later Persian intervention in the Peloponnesian War and in other conflicts always made those conflicts both worse and longer-lived. But internal conflict among the Greeks suited the Persians just fine. They couldn't defeat the Greeks militarily, but fortunately volatile and fratricidal Greek politics gave them a cheap way to keep the Greeks busy, at least until Alexander showed up.
Getting back to England, prior to the nobles who conspired to bring William over, a similar group of English nobles had conspired with the Scots against James's father, Charles I in the 1630s. In The Count of Monte Christo Alexandre Dumas wrote “The difference between treason and patriotism is only a matter of dates," quoted, I see, in Die Harder. The apposite quote is from the Elizabethan writer John Harington:
Treason doth never prosper: what's the reason?
Why, if it prosper, none dare call it treason.
In both cases, the wealthy and powerful conspired against their own government with a foreign power, because they felt that this was made necessary by powerful forces within their own country that were taking it to its doom. And both times, they succeeded. Arguably, the result of their actions is the democratic form of government we now enjoy and whose fragility we fret over.
"The culmination of decades of manipulation of English public opinion"
In late 1688 William issued a declaration that his invasion was necessary to "preserve and maintain the established laws, liberties, and customs" of England. According to Kishlansky "the declaration was a masterpiece of propaganda, the culmination of decades of Dutch manipulation of English public opinion".
Still, landing with Dutch troops in Torbay was a daring move for William, and if James had used his larger army effectively, he could well have crushed the invasion force. But several of his key commanders went over to the invader, and James eventually fled, to create an alternate court that political romantics could daydream about for nearly a century to come.
This crisis and its resonance
No one ever seemed to find the behavior of the oppositions of Charles I and James II treasonous or even outrageous. A large number of people were willing to put up with even the military intervention of a foreign power if it supported the right side. Of course, nationalism wasn't anything like the powerful organizing force it became in the nineteenth century.
I won't spend a lot of time belaboring the modern parallels, but it's worth thinking about.
Whose intervention would you accept if it enabled you to defeat the people you know are going to destroy your country?
And after you succeeded, would you be proud of this, or would you let it gently evaporate from the pages of the official history textbooks?