The World Factbook. The US has the most technologically powerful economy in the world, with a per capita GDP of $59,500.
US firms are at or near the forefront in technological advances, especially in computers, pharmaceuticals, and medical, aerospace, and military equipment; however, their advantage has narrowed since the end of World War II. Based on a comparison of GDP measured at purchasing power parity conversion rates, the US economy in 2014, having stood as the largest in the world for more than a century, slipped into second place behind China, which has more than tripled the US growth rate for each year of the past four decades. Embassy of the United States The Hague, the Netherlands. List All American States.