Today, we focused on searching reasons that prove if America still is the greatest country in the world or not in CIA factsbook. We found that American total GDP is the 1st. China, which has 1.3 billion people, has only the third highest total GDP. How amazing is that. So we can see how strong the American economy is. Another fact, America has a great amount of oil production, which ranks the second greatest in the world. In spite of this, American still has the greatest amount of oil imports in the world. This information proves America is the country which uses the most oil. From this, we can know that America has great transportation system, great factory and great production system. Because all of these are relevant to oil using. American economy really depends on the connection with other country. That is the same point which most great countries have. Because a country is much smaller than world.