http://www.marketwatch.com/story/imf-bombshell-age-of-america-about-to-end-2011-04-25 This is what i think will happen: When China becomes the world largest economy: 1) USA and Canada will begin forming under single currency. 2) USA will create a free trade zone similar to NAFTA in south america . 3) EU will begin aggressive campaign expanding in the Black Sea countries 4) Japan, Australia, and New Zealand will form somekind of pact or free trade zone. Lets the debate begins!