A map of agricultural systems in Africa by 1800 Mats Widgren has announced on H-Africa the forthcoming publication of a new map of agricultural systems in sub-Saharan Africa to 1800 in: Widgren, Mats. (in press) “Agriculture in sub-Saharan Africa by 1800: a map and a gazetteer.” In Mercuri, A.M., D’Andrea, A.C., Fornaciari, R., Höhn, A. (eds.). Plants and […]