Addis Ababa, Ethiopia, Africa, 1954, Emperor Haile Selassie, the King of Abyssinia, and his wife the Empress are pictured with L-R: Princesses Silvia (3), and Mary (4), daughters of the Crown Prince, Princes Michael (4), David (2) and Paul (7), standing, sons of the Duke of Harar, Prince Jacob (1), behind, son of the Crown Prince
Nicholas de Larmessin I Portrait of Emperor Yohannes French (c. 1680s) 216 x 121 mm Engraving; Print on paper Portrait of an Ethiopian Emperor: Black man bust-length, turned to the right, wearing crown, pearl necklace and embroidered cape, and holding sceptre in right hand; in oval frame with ribbon tied in the upper part, and coat of arms in the lower part. “Emperor Yohann” is probably Prester John.
Slavery occupies a minor timeframe in the 120,000 years of African history. Africa was an active trade partner with Arabia, and China. Africans have been to China before the European-- not as slaves--but as partners. Africans discovered Europe before Europe "discovered" us (Islamic Spain etc). The largest empire in Ancient African history was the Songhai empire with its iconic leader Askia. The Aksum empire was the 3rd largest African empire at 1.25 million sq km.
Captain Speedy and Prince Alamayou from Ethiopia. He was born a prince with a bloodline stretching back to King Solomon and the Queen of Sheba, the son of an Ethiopian emperor and heir to the treasures of one of Africa's richest royal dynasties. But, taken as a boy to Victorian England by British soldiers who ransacked his father's mountain-top palace, Prince Alemayehu died alone aged 18 in Leeds, in November 1879.