For 10 points, name this British king under whom the Thirteen Colonies gained independence.
One political cartoon of this ruler depicts him as the king of Brobdingnag. John Wilkes criticized one of this man's speeches in The North Briton. John Stuart, Third Earl of Bute, was one of this monarch's trusted allies. This man's reign saw the appointment of William (*) Pitt the Younger as Prime Minister. Parliament passed the Stamp Act under this monarch. This king experienced bouts of madness caused by porphyria. For 10 points, name this British king under whom the Thirteen Colonies gained independence.
One political cartoon of this ruler depicts him as the king of Brobdingnag.
George III [prompt on “George”]