a person who rules by force
Autocrat
dictator
A dictator.
Kingdom.
A despot.
i think it would be a dictator
A tyrant is a person who rules with absolute power. The adjective is tyrannical.
A person who rules by force
No matter how much power a person has, he (or she) can still be influenced by his mother.
One is a person who rules with absolute power. The other is a derogitory term for a transgendered person. I think you are thinking of tyranny. Tyranny usually refers to absolute power itself.
A government with little rules and little power