How did joining nafta affect the mexican economy?
it had little effect on the economy.
it caused the economy to decline.
it stopped all economic downturns.
it improve the economy.

Joining NAFTA helped improve the Mexican economy.

NAFTA eliminated trading barriers among Canada, the US, and Mexico, making trade among these countries easier and less expensive. This improved Mexico's economy, as the country could go through less trade barriers to make a larger profit. 

They showed the country that integration could be successful.