This has been a long time coming.

The Chinese economy just overtook the United States economy to become the largest in the world. For the first time since Ulysses S. Grant was president, America is not the leading economic power on the planet.

It just happened — and almost nobody noticed.

The International Monetary Fund recently released the latest numbers for the world economy. And when you measure national economic output in “real” terms of goods and services, China will this year produce $17.6 trillion — compared with $17.4 trillion for the U.S.A.