which event caused a decrease in trans-saharan trade
Athe settlement of Timbuktu
Bthe ban on slavery in Africa
Cthe collapse of the Umayyad Caliphate
Dthe increase in coastal trade with Portugal
Athe settlement of Timbuktu
Bthe ban on slavery in Africa
Cthe collapse of the Umayyad Caliphate
Dthe increase in coastal trade with Portugal