For example, aid targeted to building productive capacities in agriculture and insurance schemes that remove risks can raise the productivity of households that are close to the poverty line. Road rehabilitation can also reduce the monopolistic power of traders in remote areas, thereby raising the incomes of the poor from sales of their agricultural production. However, they also find that aid for trade exhibits diminishing returns. Tadesse et al (2017) find that aid for trade from both bilateral and multilateral donors leads to significant reductions in trade costs for recipients at both the aggregate and sector levels.