To think that America is the greatest democratic nation is to fool yourself. In the US, democracy only belongs to the super rich. They buy the best lawyers and get away with any crime. A nation with a political spectrum as diverse as just 2 political parties cannot and should not be called the greatest democratic nation. And these 2 political parties don't have much in difference. Parties change, but politics don't. A country where you cannot even expect to debate about communism and socialism is not a free country. A country that does not care about it's poor and needy is not a great country.
It's internal politics is controlled by large corporations and it's external politics by military.