The united states has a trade agreement with canada and mexico called:
the american trade contract
the american trade unit
the north american free trade agreement
the north-south amity

The right answer here is the North American Free Trade Agreement or NAFTA.

Explanation:

NAFTA has brought enormous benefits to the three parties. It has helped to modernize the Mexican economy; American and other international companies find Mexican labor costs very convenient and profit from them; consumers in the three countries enjoy a lot of products and services at convenient prices; the treaty has led to an increase in exports and imports and of the three countries GDP.