Why you should know this: You will be asked questions about the characteristics of Bantu society and the impact of Bantu migrations. You may also be asked to compare these migrations with other migrations (Mongols, Germanic tribes, Vikings, etc.)
Example: Compare the significance of the migrations in TWO of the following areas in the Post-classical Era: Sub-Saharan Africa, Central Asia, Western Europe
To develop an appropriate argument for this essay question, you would have to know specific details about the migration patterns in these areas. You would also have to know the significance of the lasting impact of these migrations to create analytical direct comparisons.