The king of England, during the American Revolution, was King George III. He was the son of Fredrick, Prince of Wales, and he suffered from porphyria throughout his life, which made him have bouts with insanity and other manifestations.
When the government of King George III fell in a major debt, he decided to increase taxes in American colonies. He also imposed taxes on papers, stamps and tea. This angered the colonies, and they wrote letters to him expressing their disapproval. The colonies started to boycott British goods and bought from other countries. When the colonies dumped all the British tea into Boston Harbor, the king became angered and imposed intolerable policies onto the American Colonists. As a result, this triggered the American Revolution.