.Japan's Nikkei 225 mark drops 12.4% as world markets shiver over threats to the United States economy The Associated PressGlobal inventory thrashing escalates with Japan's Nikkei enduring worst someday loss and also other Asian markets dropping CNNStocks routed in Asia, topple in Europe as markets fret over U.S. economic situation after weak than expected projects report CBS NewsStocks Establish for Losses as Economy Concerns Deepen: Markets Wrap Yahoo FinanceMarkets All Over The World Are Abashed by Anxieties of Slowing United State Growth The Nyc Moments.