Happiness when evaluating whether an action is morally right or wrong

According to John Stuart Mill, a moral action is based on the promotion or maximization of happiness. What does he mean by ‘happiness’? Explain. Whose happiness should we take into Consideration when evaluating whether an action is morally right or wrong? Explain. Explain the difference between act and rule utilitarianism (don’t just define these, providing an explanation at times requires giving examples to illustrate the definitions).