Walmart made two significant changes in its operations in Mexico. First, Walmart de Mexico purchased Walmart Centroamerica in $2009.$ One thing that facilitated that acquisition was the fact that Mexico, in addition to being a NAFTA member, signed free trade agreements with $49$ countries around the world, including several in Central America. This meant that they could gain access to even more products and suppliers. Walmart worked with thousands of suppliers throughout Mexico and Central America, with more than $60$ percent of their supplier base in Mexico composed of SMEs $($small $-$ and medium$-$sized entities$).$ They were also able to better coordinate the network of $14$ distribution centers in Mexico and Central America$\mathrm{.}3)$ How can NAFTA be beneficial to suppliers of Walmart?