which of the following is proven true with an investigation of NAFTA?

1. the USMCA expanded NAFTA by introducing new member countries
2. NAFTA allowed the member countries to trade with each other for the first time
3. NAFTA created many problems for all three countries that resulted in major changes in the USMCA
4. NAFTA resulted in job losses for some Americans but also lower prices on goods sold in the U.S.

4. NAFTA resulted in job losses for some Americans but also lower prices on goods sold in the U.S.

In order to determine which of the statements is true, a step-by-step investigation of NAFTA is required. Here is the breakdown:

1. The USMCA expanded NAFTA by introducing new member countries:
- NAFTA, or the North American Free Trade Agreement, was originally signed by three countries: the United States, Canada, and Mexico.
- However, the statement suggests that USMCA expanded NAFTA by introducing new member countries. This statement is not accurate because the USMCA (United States-Mexico-Canada Agreement) is actually the updated version of NAFTA, replacing it rather than expanding it with new member countries.
- Therefore, statement 1 is not proven true with an investigation of NAFTA.

2. NAFTA allowed the member countries to trade with each other for the first time:
- This statement is not accurate. NAFTA was implemented to further facilitate trade between the United States, Canada, and Mexico, but these countries already had existing trade agreements in place prior to NAFTA.
- Therefore, statement 2 is not proven true with an investigation of NAFTA.

3. NAFTA created many problems for all three countries that resulted in major changes in the USMCA:
- While it is true that NAFTA had some challenges and controversies, such as concerns about job losses in certain industries, it did not necessarily create major problems for all three countries that necessitated significant changes in the USMCA.
- Therefore, statement 3 is not proven true with an investigation of NAFTA.

4. NAFTA resulted in job losses for some Americans but also lower prices on goods sold in the U.S.:
- This statement is accurate. NAFTA did result in job losses for certain industries in the United States, particularly in manufacturing, as some companies moved their operations to Mexico where labor costs were lower.
- On the other hand, NAFTA also led to lower prices on goods sold in the U.S., as increased trade and competition allowed for lower production costs and greater consumer choices.
- Therefore, statement 4 is proven true with an investigation of NAFTA.

In conclusion, of the four statements provided, only statement 4 is proven true with an investigation of NAFTA.