Why is America so rich?

ECONOMIC gloom and doom aside, America remains the world's richest large country. It's generally estimated to have a per capita GDP level around $45,000, while the richest European nations manage only a $40,000 or so per capita GDP (setting aside low population, oil-rich states like Norway). Wealth underlies America's sense of itself as a special country, and it's also cited as evidence that America is better than other economies on a range of variables, from economic freedom to optimism to business savvy to work ethic.

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