Some European countries already possessed coastal colonies in Africa, and in the latter half of the century they began to turn their eyes towards the interior of the continent. This process, known as the 'Scramble for Africa', culminated in the 1885 Berlin conference in which the colonial powers outlined the division of Africa into spheres of influence. As a result of this, France gained control of the upper valley of the Niger River (roughly equivalent to the present territory of Mali and Niger). France then set about making a reality of their rule on the ground. In 1897, the French officer Marius Gabriel Cazemajou was sent to Niger. He reached the Sultanate of Damagaram in 1898, and stayed in Zinder at the court of Sultan Amadou Kouran Daga. He was later killed, as Daga feared he would ally with the Chad-based warlord Rabih az-Zubayr. In 1899–1900, France coordinated three expeditions—the Gentil Mission from French Congo, the Foureau-Lamy Mission from Algeria and the Voulet–Chanoine Mission from Timbuktu—with the aim of linking France's African possessions. The three eventually met at Kousséri (in the far north of Cameroon) and defeated Rabih az-Zubayr's forces at the Battle of Kousséri. The Voulet-Chanoine Mission was "marred by atrocities", and "became notorious" for pillaging, looting, raping and killing local civilians on its passage throughout southern Niger. On 8 May 1899, in retaliation for the resistance of queen Sarraounia, captain Voulet and his men murdered all the inhabitants of the village of Birni-N'Konni in what is regarded as "one of the worst massacres in French colonial history". The "brutal" methods of Voulet and Chanoine caused a "scandal" and Paris was forced to intervene; when Lieutenant-Colonel Jean-François Klobb caught up with the mission near Tessaoua to relieve them of command he was killed. Lt. Paul Joalland, Klobb's former officer, and Lt. Octave Meynier eventually took over the mission following a mutiny in which Voulet and Chanoine were killed. The Military Territory of Niger was subsequently created within the Upper Senegal and Niger colony (later Burkina Faso, Mali and Niger) in December 1904 with its capital at Niamey. The border with Britain's colony of Nigeria to the south was finalised in 1910, a rough delimitation having already been agreed by the two powers via treaties during the period 1898–1906. The capital of the territory was moved to Zinder in 1912 when the Niger Military Territory was split off from Upper Senegal and Niger, before being moved back to Niamey in 1922 when Niger became a fully fledged colony within French West Africa. The borders of Niger were drawn up in stages and had been fixed at their later position by the 1930s. Territorial adjustments took place in this period: the areas west of the Niger river were attached to Niger in 1926–1927, and during the dissolution of Upper Volta (modern Burkina Faso) in 1932–1947 most of the east of that territory was added to Niger; and in the east the Tibesti Mountains were transferred to Chad in 1931.
Some European countries already possessed coastal colonies in Africa, and in the latter half of the century they began to turn their eyes towards the interior of the continent. This process, known as the 'Scramble for Africa', culminated in the 1885 Berlin conference in which the colonial powers outlined the division of Africa into spheres of influence. As a result of this, France gained control of the upper valley of the Niger River (roughly equivalent to the present territory of Mali and Niger). France then set about making a reality of their rule on the ground. In 1897, the French officer Marius Gabriel Cazemajou was sent to Niger. He reached the Sultanate of Damagaram in 1898, and stayed in Zinder at the court of Sultan Amadou Kouran Daga. He was later killed, as Daga feared he would ally with the Chad-based warlord Rabih az-Zubayr. In 1899–1900, France coordinated three expeditions—the Gentil Mission from French Congo, the Foureau-Lamy Mission from Algeria and the Voulet–Chanoine Mission from Timbuktu—with the aim of linking France's African possessions. The three eventually met at Kousséri (in the far north of Cameroon) and defeated Rabih az-Zubayr's forces at the Battle of Kousséri. The Voulet-Chanoine Mission was "marred by atrocities", and "became notorious" for pillaging, looting, raping and killing local civilians on its passage throughout southern Niger. On 8 May 1899, in retaliation for the resistance of queen Sarraounia, captain Voulet and his men murdered all the inhabitants of the village of Birni-N'Konni in what is regarded as "one of the worst massacres in French colonial history". The "brutal" methods of Voulet and Chanoine caused a "scandal" and Paris was forced to intervene; when Lieutenant-Colonel Jean-François Klobb caught up with the mission near Tessaoua to relieve them of command he was killed. Lt. Paul Joalland, Klobb's former officer, and Lt. Octave Meynier eventually took over the mission following a mutiny in which Voulet and Chanoine were killed. The Military Territory of Niger was subsequently created within the Upper Senegal and Niger colony (later Burkina Faso, Mali and Niger) in December 1904 with its capital at Niamey. The border with Britain's colony of Nigeria to the south was finalised in 1910, a rough delimitation having already been agreed by the two powers via treaties during the period 1898–1906. The capital of the territory was moved to Zinder in 1912 when the Niger Military Territory was split off from Upper Senegal and Niger, before being moved back to Niamey in 1922 when Niger became a fully fledged colony within French West Africa. The borders of Niger were drawn up in stages and had been fixed at their later position by the 1930s. Territorial adjustments took place in this period: the areas west of the Niger river were attached to Niger in 1926–1927, and during the dissolution of Upper Volta (modern Burkina Faso) in 1932–1947 most of the east of that territory was added to Niger; and in the east the Tibesti Mountains were transferred to Chad in 1931.