According to CIA World Factbook, you're not the largest in terms of percentage of GDP. At least Germany, Japan, Italy and even Switzerland rank better in that m

According to CIA World Factbook, you're not the largest in terms of percentage of GDP. At least Germany, Japan, Italy and even Switzerland rank better in that metric. All of these single-metric comparisons are flawed. E.g. the world largest manufacturer? In comparison to what? Germany, a country with a labor force that is over 3 times smaller than the labor force in the US? https://www.cia.gov/library/publications/the-world-factbook/ https://www.cia.gov/library/publications/the-world-factbook/