French forces annexed Timbuktu in December 1893, placing a key Sahara–Sahel trading city under colonial rule. This marked a new phase in which French administrators and soldiers could regulate movement, taxation, and security along routes that caravans had used for centuries. It also signaled that political control—not just desert geography—would increasingly shape trans-Saharan commerce.
By late December 1899, French forces definitively occupied the oasis of In Salah in the central Sahara. Controlling oasis hubs helped France monitor and restrict desert travel, including caravan traffic, by tying movement to military posts and permits. This occupation also increased pressure on Tuareg confederations whose livelihoods depended on mobility and trade.
In 1901, French officers established a post at Niamey on the Niger River. The Niger corridor became a practical administrative and transport axis, encouraging trade to flow along the river and toward colonial centers rather than across long desert routes. This shift made it easier for French authorities to tax goods and manage commerce through controlled waterways and towns.
French authorities developed and expanded méhariste units—camel-mounted troops—so colonial forces could move at desert speeds and patrol remote routes. These units supported a broader “pacification” strategy: suppressing raids, enforcing borders, and monitoring caravan movement. While improving security for some routes, this also meant caravan traders faced closer surveillance and more direct colonial control.
In 1904, the Kayes–Koulikoro railway section was inaugurated, connecting inland areas to the Niger River system. This strengthened a colonial transport chain that could move bulk goods more predictably than caravans, especially for exports directed to Atlantic ports. Over time, rail-and-river routes made trans-Saharan caravan transport less competitive for many commodities.
On December 12, 1905, France enacted a major law in French West Africa (AOF) criminalizing agreements that alienated a person’s freedom, directly targeting slave trading practices. Because enslaved people had been a major “high-value” commodity in some long-distance networks, enforcement and legal changes reduced incentives for certain caravan circuits. The law also shifted disputes away from customary systems by making French courts the deciding authority.
From 1907 into the 1920s, France built the Thiès–Kayes section that would later complete a continuous rail connection from the interior toward Dakar. Railways favored centralized colonial supply chains, making it easier to move peanuts, cotton, and other exports to Atlantic shipping. As this infrastructure expanded, caravans faced a growing disadvantage in cost, speed, and state support.
In June 1909, French forces entered Abéché and proclaimed Wadai a French territory, completing a major step in bringing eastern Saharan–Sahel routes under colonial rule. Wadai had been a key node linked to trans-Saharan commerce toward Libya and the Mediterranean. French control, combined with new borders and anti-slave-trade enforcement, contributed to the breakdown of older long-distance caravan patterns connected to Wadai.
In December 1916, Tuareg forces led by Kaocen began a major uprising in northern Niger centered on the Aïr region, including the siege of Agadez. The conflict disrupted movement and trade security along routes linking the central Sahara and the Sahel. French military responses further tightened desert controls, making caravan travel more dependent on colonial permission and escort.
In March 1917, French forces relieved the Agadez garrison and began retaking rebel-held towns, ending the uprising’s main phase. Afterward, French security policy emphasized surveillance and armed control of desert movement, including protection of some routes but also restrictions on independent caravan operations. This deepened the transition from negotiated, locally governed mobility to state-managed desert travel.
On January 1, 1924, the Dakar–Niger Railway is commonly dated as opening a completed connection from the interior to Dakar. This created a powerful, state-backed alternative to caravan haulage by linking inland production zones to a major Atlantic port. The result was a structural shift in trade: exports and imports were increasingly routed through rail and maritime shipping rather than trans-Saharan caravans.
On December 28, 1926, a decree transferred the administrative center of the Colony of Niger to Niamey. The move reinforced the Niger River valley as the colony’s key administrative and economic axis, supporting policies that favored regulated river and road commerce over long desert crossings. By anchoring governance and investment along the river, French policy further reduced the relative importance of caravan trade in the Sahara.
French Colonial Policies and the Decline of Caravan Trade in the Sahara (c. 1890–1930)