The British Emprire was the greatest empire the world has ever seen. It doesn't take a genius to look down at the list of the countries that they founded and come to that conclusion.
Canada, the United States, Australia, New Zealand, right on down the list. The institutions that they put in place - the type of government, the legal systems remain to this very day.
Clearly Britain is the greatest nation ever.
But I voted for Canada because I'm Canadian and Canada is the best country in the world today in which to live. People will often say that "we are lucky to live in Canada" and I will correct them to say that Luck has nothing to do with it, but yes, we as individuals are fortunate to live in the greatest place on earth (other than the winter weather which does suck I admit.)