Egyptian interest in the Sudan intensified after 1820 as trade and politics shifted

Evidence

This process of fitting the Sudan into paradoxical categories of fact and fiction also occurred in Egypt, but by the early nineteenth century a new kind of map, informed by different investigations, was needed to reinforce trade and changing political circumstances. After 1820, Egyptians concentrated more on the Sudan, the region south of Egypt from the Red Sea coast up to the western provinces of Därfür, including Nubia. — Eve M. Troutt Powell, A Different Shade of Colonialism_…, 145

Categorization

• QUESTION: Worth chasing: what specific ‘changing political circumstances’ after 1820 drove Egypt’s renewed cartographic and territorial attention on the Sudan?