Stock prices are continuing to fall sharply across the globe today following the collapse of Lehman Brothers and Merrill Lynch, two of the world’s largest investment banks. On Monday, the Dow Jones index fell 504 points. It was the Dow’s sixth-largest point drop ever. The shakeup on Wall Street has seen the 158-year-old investment bank Lehman Brothers declare bankruptcy and the 94-year-old Merrill Lynch being bought by Bank of America in a $44 billion deal. Forbes magazine said the United States is now facing perhaps the worst financial crisis since the banking panic that former President Franklin Roosevelt faced in 1933.