Country X and Country Z specialize in the production of agricultural equipment and wheat respectively. Country X exports agricultural equipment to Country Z, which in turn exports wheat to Country X. According to the theory of comparative advantage, this mutually beneficial trade relationship is an example of

Alaska king crab fishing in the 1960s and '70s was a dangerous but rich fishery. boats from as far away as california and japan braved the treacherous gulf of alaska crossing to reach the abundant king crab beds in cook inlet and bristol bay. suddenly, in the early 1980s, the fishery crashed due to over fishing. all crabbing in those areas ended. to this day, there is no crabbing in bristol bay or cook inlet. a. how would an economist explain the decline of the alaska king crab fishery