The Posner-Hufbauer hypothesis of this process introduces a technology gap that explains a temporary monopoly. The mobility of sectors is central to the specific-factors model of this process, which was developed by Jacob Viner as an extension of an earlier thinker’s theory. If this process doesn’t exist, a state is characterized as an autarky. (15[3])This process (-5[1])is modeled (15[1])by the (15[2])(*) Heckscher-Ohlin model. (10[1]-5[1])In the (-5[1])2x2x2 model of this process, barriers are assumed to be nonexistent and transportation costs are zero. Paul Samuelson once stated that comparative advantage is both “true and non-trivial” in regards to the Ricardian model of this international process. (10[1])For 10 points, (10[2])name this process, (10[1])the import and export of goods. (10[1])■END■