What was the first man-made invention to break sound barrier?

The first man-made object to break the sound barrier was the Bell X-1, a rocket-powered aircraft designed and built by Bell Aircraft for the United States Air Force.

On October 14, 1947, Chuck Yeager, a US Air Force test pilot, successfully flew the X-1 at Mach 1 (700 mph) over the Mojave Desert in California. This event was a landmark achievement in aviation history, proving that humans could travel faster than the speed of sound.