The highest form of economic integration is called the（ ） .
To better enjoy the benefit of free（ ）of goods, services, capital, labor and other resources, countries have signed various agreements to liberalize trade among themselves.
Translate the following turns into English.
多边贸易
Match the words and expressions on the left with the explanations on the right.
budget
biennial
offeree
integration
affiliate
export earnings
intuitive
board
purchasing power
recipient
tariff
revenue
specialization
dispute
firm offer
hyperinflation
reimburse
invoice
average
perishable
bundling
draft
maturity
Translate the following sentence into English.
最著名的自由贸易区是北美自由贸易区，它是由美国、加拿大和墨西哥于1991年建立的。
