In the nearly 250 years since the nation’s founding, technological leaps and demographic shifts transformed a scattered collection of farmers and laborers into today’s workforce of more than 150 million people. The economic evolution began with a workforce barely large enough to populate a modern-day city. Today’s Americans earn more, work fewer hours and are more likely to hold a service job than ever before. Here’s how the labor force has changed: 🔗 https://on.wsj.com/43uYTPo | The Wall Stree