We study labor productivity in agriculture within a two-region, two factor and two commodity economy. Increases in productivity can lead to higher or to lower agricultural prices, depending on the internal structure of the economy. We give necessary and sufficient conditions for either outcome;...

The paper studies a two-region economy , with two sectors and three factors of production : oil, capital and labor . The South exports oil in exchange for industrial goods from the North . There is a net capital inflow to the South . This equals the difference between its export revenues and...