Male and female Ethiopian slaves resting, Korti, Sudan. Coloured lithograph by Louis Haghe after David Roberts, 1846. https://www.rawpixel.com/image/13961264/image-person-art-sandFree Image from public domain licenseBattle of Omdurman, Sudan: troops are massing and engaging in battle next to the River Nile. Chromolithograph by A.… https://www.rawpixel.com/image/13960735/image-horse-cow-personFree Image from public domain licenseShallow well, with zeers (large clay water pots) in the background, Khartoum, Sudan. Photograph, 1903/1913. https://www.rawpixel.com/image/13996398/photo-image-background-plant-treeFree Image from public domain licenseColosseum, Meter Sudans & Arch of Constantine, Rome by Jane Martha St John https://www.rawpixel.com/image/14318791/colosseum-meter-sudans-arch-constantine-rome-jane-martha-johnFree Image from public domain licenseColosseum (1680) by anonymous, Hier Ferri, Aegidius Sadeler II, Etienne Dupérac, Giovanni Giacomo de Rossi and Marcus Sadeler https://www.rawpixel.com/image/13748399/image-paper-cartoon-frameFree Image from public domain licenseTemple at Wadi Saboua, Sudan. Coloured lithograph by Louis Haghe after David Roberts, 1846. https://www.rawpixel.com/image/14006926/image-cloud-person-artFree Image from public domain license