How has the United States helped the Mexican Economy grow and helped to increase BOTH imports and exports?

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1 point

a. Sending workers to Mexico
b. Signing NAFTA to encourage free trade
c. Giving them low interest loans

b. Signing NAFTA to encourage free trade

is that correct

Yes, that is correct. The United States signing the North American Free Trade Agreement (NAFTA) has helped to increase both imports and exports between the two countries, thus contributing to the growth of the Mexican economy.