I think the three pillar industries in the United States should be construction, automobile industry and information industry. But for developed countries, the proportion of tertiary industry is relatively large. There are five major commercial banks in America: Bank of America.

As for the impact, the most convincing should be the data. Among the Forbes Global 500 in 2007, Citibank ranked 14, Bank of America ranked 37, JPMorgan Chase ranked 45, Morgan Stanley ranked 6 1, Merrill Lynch ranked 70, Goldman Sachs ranked 72, Wells Fargo ranked 126 and Lehman Brothers ranked 132.