Kaabu was founded in the 13th century as a province of the Mali Empire and dominated southern Senegambia up until the 19th century. The area was ethnically diverse, though the Mandinka Nyancho lineages dominated the political system.^[3]

The power of Kaabu began to wane during the eighteenth and nineteenth centuries. In 1776, militant Islamic Torodbe clerics established a theocratic state in the Futa Djallon. With some support from Soninke and Mandinka chiefs, they launched a jihad against non-Muslim states in the region, particularly Kaabu.^[4] This holy war would culminate in the Battle of Kansala.

Some non-Muslim Fula, pushed out of the Futa Djallon by the Torodbe, settled in Kaabu and often herded the cattle of the ruling Nyancho aristocracy. Over the course of the conflict with the Imamate, however, these immigrants were seen as a potential 'fifth column', and were oppressed and extorted, creating civil conflict in the empire.^[4] The decline of the slave trade, a pillar of the economy for centuries, also pushed Mandinka elites to squeeze the peasants for taxes to replace their lost trade revenues, creating further unrest.^[5]

Oral histories record that before attacking Kansala the Fula leaders put several marabouts into retreat for forty days and nights. So great was the Kaabu Emperor's magical protection that only one of them was finally able to penetrate the shield, but it was enough. When this marabout emerged with the announcement that he had the Kaabu Emperor in his grasp, it was the signal for the waiting Futa Jallon army to march.^[6]

According to historian Djibril Tamsir Niane, Gabou had 25,000 soldiers, half of whom were present directly in the capital of Gabou where the Battle of Kansala took place. They were mustered by mansaba Dianke Waali to meet the Fulani invasion. The Futa Jallon mobilized 12,000 horsemen.^{[citation needed]}

Alfa Molo’s forces surrounded Kansala’s fortress for either one^[1] or three months,^[7] depending on the source. Though both sides were armed with muskets, neither would fire a shot. According to legend, Abdu Khudus, a prominent marabout from Timbo, told Alfa Molo that whichever side fired first would lose the battle. Within the Mandinka ranks, a resident marabout named Foday Barika Drammeh told Mansaba Waali the same.^[8] The Nyancho were infuriated by the mere presence of the Fula and believed that to not attack was cowardly. It is reported that on May 13, a Mandinka finally fired a shot that caused the battle to commence. The story is likely apocryphal and meant to highlight the hubris and arrogance of the Nyancho aristocrats.

For eleven days,^[7] the Fula, who could not bring their cavalry to bear against the fortress walls, were kept at bay. The only cavalry casualty of the battle may have been a Mandinka named Faramba (General) Tamba of Kapentu whom marched out of Kansala with only his walking stick to drive the “haughty” Fula away. He was trampled to death by a Fula horseman. The Mandinka accounts are of the opinion that Fula took many casualties with hundreds of their infantry being decapitated as they tried to scale the wall with ladders.^[7] They failed to enter the city until Mansaba Waali, convinced that the sheer number of enemies was insurmountable, ordered the gates open. At this point, Mandinka women began committing suicide by jumping down wells to avoid slavery. Mansaba Waali ordered his sons to set fire to Kansala’s seven gunpowder stores once the city was full of the enemy. Six were successfully ignited, killing all the Mandinka defenders and devastating the invading army. Only around 4000 Fulas survived.^[9]

The fall of Kansala marked the end of the Kaabu Empire. In the aftermath Alpha Molo established the kingfom of Fuladu in the lands around the upper Gambia and Casamance rivers.^[9]From the campaign itself Futa Jallon's army captured 15 000 slaves.^[10]

The story of the battle of Kansala remains one of the most well-known for griots in Senegambia today, particularly among the Mandinka.^[11]

• Kaabu Empire
• Imamate of Futa Jallon
• History of Guinea-Bissau

• Bowman, Joye (1997). Ominous Transition: commerce and Colonial Expansion in the Senegambia and guinea, 1857-1919. London: Avebury. pp. 198 pages. ISBN 1-85972-154-0.
• Carpenter, N.R. (2012). Sovereignty along a west african frontier: The creation of the guinea- senegal border, 1850–1920 (History PhD). University of California, Davis. ProQuest 1234670452. Retrieved 30 July 2023.
• Forrest, Joshua (2003). Lineages of State Fragility: rural Civil society in Guinea-Bissau. Athens, OH: Ohio University Press. pp. 312 pages. ISBN 0-8214-1490-9.
• Glovsky, David (2020). Belonging beyond boundaries : constructing a transnational community in a West African borderland (PhD). Retrieved 28 July 2023.
• Lobban, Richard Andrew Jr.; Mendy, Peter Karibe (2013). Historical Dictionary of the Republic of Guinea-Bissau (4th ed.). Lanham: Scarecrow Press. ISBN 978-0-8108-5310-2.
• Sonko-Godwin, Patience (1988). Ethnic Groups of the Senegambia: A Brief History. Banjul, Gambia: Sunrise Publishers. pp. 65 pages. ISBN 9983-86-000-7.
• Vigh, Henrik (2006). Navigating Terrains of War: Youth and Soldiering in Guinea-Bissau. New York City: Berghahn Books. pp. 258 pages. ISBN 1-84545-149-X.