Prior to NAFTA, what was a challenge regarding US and Mexico trucking routes?

Answer: C — Limited trade agreements

Prior to NAFTA (North American Free Trade Agreement), one of the prominent challenges concerning trucking routes between the US and Mexico was the existence of limited trade agreements. Before NAFTA, cross-border trade between the two countries was restricted by various regulations and tariffs, which hindered the efficiency and ease of transportation. The absence of a comprehensive trade agreement created barriers to accessing markets and utilizing trucking routes effectively. Limited agreements also meant that trucking companies faced challenges in terms of standardization and recognition of licenses, regulations, and safety standards, leading to increased confusion and complications in cross-border transportation. NAFTA was specifically designed to address these barriers by promoting trade liberalization and allowing for a more integrated transportation system between the US, Canada, and Mexico, which subsequently enhanced trucking routes and operations.