Before we get into working out how much data you need, we should probably get you up to speed with the terminology for measuring units of data, which in turn is by networks to tell you how much data you get with a contract. Kb. This stands for kilobyte and just over 1000Kb make up one Mb. MB.
In its heyday, Timbuktu was an important trading hub for two of Africa's most important items of commerce: salt and gold. The wealth of the city is evident from the quotation above. But Timbuktu also became an important city for Islamic scholarship.
It was the control of this trans-Saharan trade that fueled medieval West Africa's greatest empires, those of Ghana (not to be confused with the modern country), which flourished between the ninth and eleventh centuries A.D.; Mali, which reached its apogee in the late fourteenth century; and Songhai, which dominated the region between the mid-fifteenth and late sixteenth centuries.