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| e. West Central Africa |
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(See 1914)| |
| 1912 |
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| Discovery of diamonds in Lunda area of Angola. Mining of diamonds in Angola began in 1916, and first exports in 1920. | 1 |
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| 1914–18 |
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| Troops of the Belgian Congo assisted the French and the British in coordinating the war against Germany. | 2 |
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| 1916 |
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| Holy Ghost Fathers replaced German Pallottine Fathers in Cameroon. Seventh Day Adventists began work in the Belgian Congo. | 3 |
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| 1917 |
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| Female slavery prohibited by the French in Cameroon. | 4 |
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| 1920 |
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| Extensive reorganization of local government in the Belgian Congo. | 5 |
| Bwiti cult began in Gabon; Kiyoka cult started in Angola. | 6 |
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| 1921 |
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| Simon Kimbangu, a BaKongo peasant and catechist, declared that he was an emissary of God, chosen to lead his people from under the yoke of Belgian colonialism. He was arrested that year, but his movement persisted in rural areas for more than 30 years despite concerted persecution. | 7 |
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| 1922, July |
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| Two hundred forty-four followers of Simon Kimbangu were deported from the Huri district. | 8 |
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| 1923 |
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| Many Kimbanguist churches opened in the Belgian Congo. | 9 |
| Slavery abolished in Cameroon. | 10 |
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| 1925 |
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| Kimbanguists banned in Kasai. Watchtower movement (Kitawala) introduced by Romo Nyirenda Mnyasa into Katanga. | 11 |
| The University of Louvain established medical and agricultural institutes in the Belgian Congo. | 12 |
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| 1926, May 28 |
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| A Military coup in Portugal led to the Estado Novo, and the accession to power of Antonio Salazar in 1928. Estado Novo revived colonial development policies, especially with respect to cotton, forcing many peasants in Angola and Mozambique to convert to cotton production instead of food crops, at great cost to their living standards. | 13 |
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| 1929 |
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| Electric lighting introduced into Douala. | 14 |
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