African historians have learned to interpret oral histories, passed down in Africa's many traditions, crosschecking them against archæological and documentary evidence to produce a rich picture of the African past. Economists and
Kutokana na kusafiri sehemu mbalimbali duniani, Abeid Amani Karume alijifunza mengi ya kimaisha na kuona jinsi gani mataifa ya ulaya na mabepari walivyotumia hila na ujanja kuzinyonya nchi za Afrika.