1917 is a common year starting on a Monday.
April 6: United States enters the war.
April 9: Battle of Arras.
April 16: Battle of the Chemin des Dames.
May 20-June 10: paroxysm of mutinies in the French army.
November 2: Balfour declaration.
November 7: October Revolution.
December 10: The Nobel Peace Prize, the only one to be awarded during the First World War, is awarded to the International Committee of the Red Cross.
January 6: German peace proposals. Germany is said to have secretly offered the Allies the evacuation of Belgium in exchange for the Belgian Congo.
January 12: François-Henry Laperrine is appointed senior commander of the Saharan territories; he takes possession of his command in Ouargla on February 2. January, Belgian Congo: capture of the last king of the Luba Kasongo Nyembo by the Belgian authorities. April 17: Akroma agreements (Acroma or Akramah). Italy grants autonomy to Cyrenaica under the authority of Emir Idris. May: Jamaican Marcus Garvey launches the Universal Negro Improvement Association (UNIA) in the United States. It advocates the return of blacks to Africa and exalts the black race. June 7, Ethiopia: commissioning of the Djibouti-Addis Ababa railway line.
July 5: resumption of the Allied offensive in East Africa, combined with the Belgians, under the command of General Van Deventer. The first skirmishes took place on July 6 at Mnindi, on the road from Mtshakama to Kilwa between the King's African Rifles and the Germans, followed by the first frontal engagement on July 19 at Narungombe. September 25: foundation in South Africa of the Anglo -American Corporation by Ernest Oppenheimer (diamonds).
October 9, East Africa: capture of the fortified position of Mahenge by the Belgian police force. The German forces of Lettow-Vorbeck must flee even further south, then on November 28 pass into Portuguese East Africa (Mozambique) to lead the guerrillas there. October 15-18: German victory of von Lettow-Vorbeck which pushes the British forces near from Mahiwa. October 26: General Laperrine leaves Ouargla by automobile and reaches In Salah on November 6. He continued his tour to Kidal, Bamba and Timbuktu and returned to Ouargla on April 22, 1918.
November 28: German victory over the Portuguese at the Battle of Negomano in northern Mozambique.
November 25: creation in Nigeria of the United African Methodist Church, known under the name of Eleja (fishmongers), in reaction to polygamy.
The authorities of the Cape Province empty the trains bringing the Blacks to the mines, to protect the Rand from a possible extension of typhus, causing a scandal. At Sterkstroom station, men and women are brutally stripped, showered and shaved. There are deaths.
Hanoc Sindano of the Kitawala (or Watchtower movement, influenced by Jehovah's Witnesses), preaches against the colonial authorities in Northern Rhodesia.
In Mozambique, the Barue, a group related to the Shonas living south of the Zambezi, were subjected to the Portuguese who proceeded to massive enlistments for their troops. Divided by succession disputes, they do not react. Mbuya, the priestess of the supreme god Mwari, urges them to revolt. One of the suitors, Nongwe-Nongwe, stands against the Portuguese.
January 1: Emiliano Chamorro Vargas (conservative), assumes the presidency of Nicaragua (end of January 1, 1921.
January 16: The Minister of Foreign Affairs of the German Empire, Arthur Zimmermann, sends a telegram to the German Ambassador to Mexico, Heinrich von Eckardt, instructing him to contact the Mexican government and to propose an alliance against the United States. The telegram is intercepted by the United Kingdom