Source: Ancient Near Eastern Influence In Sub-Saharan Africa (University of South Africa) 2008 A.D.
This source confirms that Hebrews were dispersed throughout Africa over 2,500 plus years. Most likely, the obsession for gold, slave trading, and Semitic migrations into Africa have led to the many Hebrewisms of Africa and various African peoples claiming descent from the ancient near east. In my opinion, I believe the biggest factor were the different waves of Semitic migrations into Africa that were augmented by various colonies that were established by groups like the Canaanite-Israelite Phoenicians and slave trading. Obsession for gold can lead to colonies being produced throughout Africa but not to the extent in which various mega-ethnic groups in Africa have been associated with or claim Israelite/ancient near east descent. Slave-trading has its limits because entire ethnic groups should not be equated to being of ancient near eastern descent or claim ancient near eastern descent.