This is why governments need policies for pro-poor growth and to reach sub-groups that growth does not otherwise reach. Furthermore, since the incidence of poverty is country-specific, any pro-poor policy, including trade policy, must first identify who the poor are, where they live, how they earn their livelihoods, and what constrains them from participating in growth. The challenge for an aid agency providing Aid for Trade is to ensure that trade expands and generates pro-poor growth, which is the key objective of the Aid for Trade Initiative.