The United States is still the dominant financial power in the world.
China is a remote slave force to produce products for the people of the United States.
It's cheaper to maintain slaves in their own land because it doesn't cost as much to sustain them.
If the United States, otherwise identified as Babylon The Great, goes down perhaps from an attack of the Russian King of The North all the merchants will mourn because there is no one to buy their full stock of goods.
The pivotal mistake of JW's is that Babylon the Great is false religion. Once the get that worked out the rest of the prophecies will make sense.