Final answer:
The original CACM members did not include Panama, making the statement false; instead, Nicaragua was the fifth member. The expansion of NAFTA led to CAFTA, including the same countries as the CACM plus the Dominican Republic.
Step-by-step explanation:
The statement that the five original members of the Central American Common Market (CACM) are El Salvador, Honduras, Guatemala, Panama, and Costa Rica is false.
The original members of the CACM included Guatemala, El Salvador, Honduras, Costa Rica, and Nicaragua. Panama was not a part of the CACM. Instead, an expansion of NAFTA occurred leading to the signing of the Central American Free Trade Agreement (CAFTA), which included the original CACM countries minus Panama, plus the Dominican Republic. The CAFTA-DR agreement was an effort to create stronger economic ties and enhance trade among these countries and the United States.