In a nut shell, this is how it happens. You take everything away per manufacturing from group "A" and give it to group "B". Now it leaves group "A" unemployed and no money to purchase, hence an economic down fall. Group "B" who is making the products now, is in trouble because there are no sales orders because group "A" has no money to spend for they are now unemployed.
If manufacturing would have been shared by each country, it would keep all employed around the world. However, the greed for cheaper labor by USA corporations caused the economic down fall around the world.
Manufacturing needs to be distributed and shared around the world. You cannot give one country everything and expect to see sales from other countries when the other countries like the USA are now unemployed.
The domino fall has now happened that began decades ago. Watch this video below and pay close attention. This is an excellent documentary. This is why each country around the world needs to bring back their own manufacturing so people are all employed, and can share the sales. Sounds really simple doesn't it? It is, but greed stands in the way.
Many USA corporations are pulling out of China and are moving their production to places like Vietnam and Bangladesh for even cheaper labor. It really won't matter how cheap the labor is, if people in other countries have no jobs, it means no money to buy.