Why is the US called a postindustrial economy?

The U.S. is referred to as a postindustrial economy because its economic growth is increasingly driven by the service sector rather than manufacturing. This shift began in the late 20th century as technological advancements and globalization led to a decline in traditional manufacturing jobs. Today, industries such as finance, healthcare, technology, and information services dominate, reflecting a focus on knowledge and innovation over heavy industry. This transition signifies a broader trend where economies evolve from production-based to service-oriented models.