The demand curve in a country open to trade is the line DD. It crosses dd at B on the horizontal axis: if it had this skill supply ratio, even an open country would not trade. The developing country, which has a relatively large supply of unskilled labor and hence is a net exporter of clothing, must lie to the right of B (and the developed country must lie to the left of B). So for a developing coun- try, opening to trade shifts the demand curve in favor of unskilled labor {DD lies above dd) and narrows the gap in wages. With a skill supply ratio S2, the relative wage of unskilled labor would rise from w0 to w2.