By at least one accepted metric China is the largest. https://en.wikipedia.org/wiki/World_economy[*] https://en.wikipedia.org/wiki/World_economy[*] That metri

By at least one accepted metric China is the largest. https://en.wikipedia.org/wiki/World_economy[*] https://en.wikipedia.org/wiki/World_economy[*] That metric is Gross Domestic Product by Purchasing Power Parity, or GDP (PPP). The IMF and CIA Factbook use it as a measure. Economies can be measured in many ways. By GDP alone, which I agree is the more common measure, China is not the largest -- though all indicators point that it soon will be by this measure also. http://www.euronews.com/2014/12/09/the-american-century-comes-to-an-end-as-china-becomes-the-world-s-largest-/ http://www.euronews.com/2014/12/09/the-american-century-come... * Wikipedia data drawn from IMF.