Why did the British monarchy become so powerless in the 1800 and?

The British monarchy became increasingly powerless in the 1800s due to the rise of parliamentary democracy and the growing influence of the elected House of Commons. The Glorious Revolution of 1688 had already established the principle that the monarchy's power was limited by law, and by the 19th century, reforms such as the Reform Acts expanded the electorate and diminished royal authority. Additionally, the monarchy's inability to effectively manage political crises and public discontent further eroded its power, leading to a constitutional framework that prioritized parliamentary governance over royal prerogative.