Answer:
b. created a free-trade zone for the United States, Mexico, and Canada.
Explanation:
The NAFTA is known as the North American Free Trade Agreement.
The NAFTA created a free trade area or zone for the United States, Mexico, and Canada.
A free trade area is when there's a free flow of goods and services among participating countries and barriers to trade are removed.
The NAFTA agreement was established on January 1, 1994.
I hope my answer helps you.