"America's agricultural output, which then and now, was the primary source of America's economic strength" I think that's not correct. Sectors by percentage o

"America's agricultural output, which then and now, was the primary source of America's economic strength" I think that's not correct. Sectors by percentage of the US GDP: agriculture: 1.2%, industry: 22.1%, services: 76.7% http://en.wikipedia.org/wiki/Economy_of_the_United_States http://en.wikipedia.org/wiki/Economy_of_the_United_States Arms and weapons alone (one of the main perceived sources of "America's economic strength" abroad, along with intellectual property and others) make more than that (sources estimate between 1% and 4% of the US GDP). http://www.stanford.edu/class/e297a/U.S.%20Defense%20Industry%20and%20Arms%20Sales.htm http://www.stanford.edu/class/e297a/U.S.%20Defense%20Industr... http://en.wikipedia.org/wiki/Arms_industry http://en.wikipedia.org/wiki/Arms_industry