We hear a lot about the most powerful countries of the world, but most of us do not know what makes them the powerful countries of the world. Speaking frankly, it’s their strong economy structure and influence over the other countries is what makes them the powerful countries of the world. Undoubtedly, United States of America lies at the top position of the top list of powerful countries. The country has the strongest army, largest economy and also extremely powerful democracy. USA is also known to be an active member of many International influential organizations and thus maintains an effective control over International connections.