In the context of the modern British crown, the "ruling" is far more ceremonial than substantive. Similar for most other surviving European royal families.
>>bell-c+(OP)
The idea that the UK monarchy is largely ceremonial and just a boon for tourism is an incredibly prevalent idea but apparently just good PR. We've learned the monarchy has extensively interfered with the UK's parliament legislative process and done so covertly:
>>pedroc+hj
covert lobbying is modus operandi of any democracy. whenever you write to somebody you elected, you're covertly influencing the legislative process...
>>k__+Z2
Technically the monarch has the power to veto laws that they disagree with instead of signing them in the UK, but in practice that hasn't happened since the 18th century.