Far from being deservedly neglected outliers, the Niger and Congo expeditions were in many respects emblematic of British efforts to explore Africa. The historical forces that did so much to shape the trajectories of the Niger and Congo expeditions—slavery and the slave trade, imperial rivalries with other European powers, and the roles of African states and communities—were a persistent feature of these efforts. Failure was a frequent outcome. The preoccupation with the Niger River and West Africa persisted through the first half of the century and the renewal of interest in the Congo River and Equatorial Africa toward the end of the century spurred the Scramble for Africa. The main throughline that runs from Mungo Park at the start of the century through the Niger and Congo expeditions to the many British explorers who trekked across Africa in the decades that followed was a shared sense of hubris.