Answer:
The countries have a Foreign Trade Zone (FTZ) in mind
Step-by-step explanation:
A foreign-trade zone is a class of special economic zone. It is a geographic area where goods may be landed, stored, handled, manufactured, or reconfigured and re-exported under specific customs regulation and generally not subject to customs duty.
Here, all barriers to the free flow of goods and services between participating countries are removed but they still maintain their dependent external trade policies
Foreign-trade zone also called free-trade zone began in the 1960s and began to increase exponentially in the 1980s. Today, there are over 5,400 FTZs in the world.