translate English to French: Urban areas have grown rapidly, as migrants from rural areas have flooded into the cities, driven by overpopulation in rural areas in relation to the natural resource base under current farming practices.
Les zones semi-humides et semi-arides ont un avantage comparatif appréciable en matière de production et d’exportation d’une vaste gamme de cultures annuelle~ telles que le sorgho, le maïs, le coton, l’arachide et le niébé.