In the time leading up to the USA's Revolutionary War, this was a slogan used by the revolutionaries to describe the state of Britain's control over them. Britain taxed the colonies it owned, but did not allow them any representation in parliament. Actually, the worst thing the Britons could have done would be to give them representation. One or two representatives from the colonies would be easily outweighed by the many representatives from Britain itself. What's more, it would give the Britons an excuse to raise taxes. So, don't scream about taxation without representation.