In the Great Plains.
Hope this helps
A Line Graph shows chage over time.
Answer: See explanation
Explanation:
You didn't ask your question but the other countries involved are Mexico and Canada.
In 1994, the North American Free Trade Agreement (NAFTA) came into being in order to encourage free trade between the United States, Canada and Mexico.
North American Free Trade Agreement (NAFTA) helped in the elimination of tariffs and import duties and this brought about easy trading among the countries.
