As the Scramble for Africa intensified in the years after the Berlin Conference, European powers negotiated a thicket of bilateral treaties to divide territory without going to war with each other. This convention fixed boundaries between French and British claims, borders that, largely unaltered, became the modern frontiers separating countries such as Nigeria, Niger, and neighboring francophone states.
These treaties were drawn largely by men who had never set foot in the territories they divided, using rivers, latitude lines, and vague ethnographic surveys as guides. The resulting borders frequently split ethnic and linguistic groups — the Hausa, the Fulani, the Yoruba — across colonial lines that hardened into the national boundaries of independent African states in the 1960s.
Britain was primarily focused on securing the lower Niger for trade routes to its emerging Nigerian protectorate, while France pushed to consolidate a contiguous swath of West African territory stretching toward its colonies in the Sahel.
The long-term consequences were profound: modern West African nations still grapple with border-spanning ethnic communities, smuggling economies born of arbitrary lines, and political grievances traceable to a handful of diplomats haggling over maps in European capitals in the late 1880s.