> In fact in the UK it’s probably hard to pinpoint where real monarchy ended and democracy started.
I would put it more or less around Oliver Cromwell's tenure, even though the monarchy enjoyed some resurgence in power after the monarchy was restored it was short lived and the threat of parliament removing an unruly monarch, as they had done fairly decisively, became a real constraint on their power.
The struggles around that were also significant inspirations to French and American revolutions that followed.
I would put it more or less around Oliver Cromwell's tenure, even though the monarchy enjoyed some resurgence in power after the monarchy was restored it was short lived and the threat of parliament removing an unruly monarch, as they had done fairly decisively, became a real constraint on their power.
The struggles around that were also significant inspirations to French and American revolutions that followed.