Source: Transactions of the Society of Biblical Archæology Volume 7 (Longmans, Green, Reader and Dyer) 1882 A.D. Note: Page 283 of the source. This source confirms that there were ancient black Syrians and that they were Arameans. This is important because Abraham was an Aramean.
Source: The Sacred City of the Ethiopians Being a Record of Travel and Research in Abyssinia in 1893 (Longmans, Green and Company) 1896 A.D. Note: Page 175 of the source. Note: Page 175 of the source. Note: Page 176 of the source. This source confirms the ancient Himyarite presence in the the east coast of Africa.