If he’s seeking to work directly in Gambia on development, perhaps becoming an agricultural researcher or adviser—like an ag extension agent—would be a way for an individual to help many people in his community. According to Access Gambia’s agriculture page, 80% of the population work in agriculture. Considering the difficulty of the short rainy season, maybe he could identify additional crops, specific cultivars, cover crops, co-plantings, or techniques well-suited to the local particulars that would increase agricultural productivity.
If he’s seeking to work directly in Gambia on development, perhaps becoming an agricultural researcher or adviser—like an ag extension agent—would be a way for an individual to help many people in his community. According to Access Gambia’s agriculture page, 80% of the population work in agriculture. Considering the difficulty of the short rainy season, maybe he could identify additional crops, specific cultivars, cover crops, co-plantings, or techniques well-suited to the local particulars that would increase agricultural productivity.
http://www.accessgambia.com/information/farming-agriculture.html