If you are interested in a more detailed portrait of the shifts happening, this book is excellent. If the US loses its technological advantage and its reserve currency status, it is very difficult to know what will happen.

https://www.amazon.com/Shadows-American-Century-Decline-Disp...

China's biggest problem will be demographics, second only to their political system.

US will likely due to tax / deficit issues, not so different than the French aristocrats who refused to pay taxes in run-up to the revolution.