Simultaneously, the agricultural sector also experiences an increase in productivity (Lewis, 1954). The advantages can be realised through physical capital accumulation and by exploiting economies-of-scale effects. Moreover, technological change through innovations and human capital accumulation through industrialisation act as key drivers for overall economic growth. Finally, as the income of economies increases, the share of income spent on agricultural goods tends to decrease, which shifts aggregate expenditures more on manufactured goods. This opens an opportunity for participation in world markets as demand for manufactured goods diversifies, leading to the need for higher production capacities.