There is no short answer to this question which would be anywhere near to accurate. The transfer of power from the monarch to parliament was not an event but a process. A long, at times slow, process. A process which sometimes went into reverse for a while; often frustrating and occasionally blood-soaked. You would like an answer ? Ok, in the course of the last 900 years.
MONARCHY
The power and authority of the monarchy were replaced by the parliament.
It was the Civil War, where the Parliament declared War on the King. The Monarchy was abolished for about 10 years with Oliver Cromwell leading the country as a dictator. Afterwards, both Parliament and the Monarchy were restored, with the Monarchy accepting limited power.
Parliament decided to restore the monarchy because it was tired of the taxation, violence, and disorder.
They get their power by elected leaders in a Parliament.
It was the growing power of Parliament, and several imcompetent monarchs which led to this. By the 17th century, Parliament had gained one power that the monarchy no longer had - they were in charge of raising taxes. King Charles I got into so many arguments over money, religion and political affairs that his own Parliament declared war on him. In the end, Parliament won and had the king executed. Oliver Cromwell became the dictator of England for 10 years (this period is known as the Commonwealth), and abolished an increasingly corrupt Parliament. After his death, both the Monarchy and Parliament were restored, and king Charles II became King. The Civil War led to a gradual increase in Parliament's power, which may well have stopped the country from having a revolution.
used a number of different tactics to reduce the power of the monarchy. They tried and executed unpopular officials. They also Passed the Triennial Act, which required Parliament to meet every three
Petition of right
commonwealth
Parliament demanded that its rights and powers be respected, but the monarchy stood for rule by divine right, causing a civil war to start between them.
The monarchy has very little to do with the running of the country. The UK is a constitutional monarchy and a parliamentary democracy.
England was a monarchy until 1688 CE. While it was the monarchy state, parliament's power was limited by the ruler. After the Glorious Revolution of 1688, England became a constitutional monarchy and parliament had more power than the ruler.