HARD 2 EXPLAIN

"Lehman's bankruptcy filing in the early hours of Monday, Sept. 15, sparked a chain reaction that sent credit markets into disarray. It accelerated the downward spiral of giant U.S. insurer American International Group Inc. and precipitated losses for everyone from Norwegian pensioners to investors in the Reserve Primary Fund, a U.S. money-market mutual fund that was supposed to be as safe as cash. Within days, the chaos enveloped even Wall Street pillars Goldman Sachs Group Inc. and Morgan Stanley. Alarmed U.S. officials rushed to unveil a more systemic solution to the crisis, leading to Sunday's agreement with congressional leaders on a $700 billion financial-markets"