As a region,what is the unifying characteristic of Sub-Saharan Africa?

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Sub-Saharan Africa is characterized by similar livelihood systems and a shared colonial experience. The region has a history of agricultural economies, with many communities relying on subsistence farming for their livelihoods. Colonization by European powers, which began in the 19th century and lasted until the mid-20th century, also left a lasting legacy across the region. This shared history has led to common challenges and opportunities, and has contributed to a sense of regional identity.

As a Region,what Is the Unifying Characteristic of Sub-Saharan Africa