Kongo Kingdom Fought Slavery
The Kongo Kingdom converted to Christianity and fought against slavery. King Afonso I requested help from Portugal to stop the slave trade. The kingdom's relationship with European powers was complex.

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The Kongo Kingdom Converted to Christianity and Fought Against Slavery On May 25, 1534, King Afonso I of Kongo wrote to King Joao III of Portugal, requesting help to stop the slave trade. This letter, penned in the kingdom's capital Mbanza-Kongo, marked the beginning of a complex relationship between the Kongo Kingdom and European powers. Historian John Thornton notes that King Afonso I was a key figure in this period, navigating the challenges of European contact.
What Everyone Knows
Most people think the Kongo Kingdom was a primitive African state that was easily overrun by European colonizers. The standard story goes that African kingdoms were either resistant to Christianity or quickly abandoned their traditional beliefs to adopt European customs. However, this narrative oversimplifies the complex history of the Kongo Kingdom, which had a rich cultural and political heritage. The kingdom's interactions with European powers were more nuanced, involving strategic alliances, trade agreements, and conflicts.
What History Actually Shows
Historian Linda Heywood argues that the Kongo Kingdom was a powerful and sophisticated state that actively engaged with European powers. In 1483, the kingdom's ruler, Nzinga a Nkuwu, converted to Christianity, taking the name Joao I, and established diplomatic relations with Portugal. By 1526, the Kongo Kingdom had become a major Christian state in Africa, with King Afonso I actively promoting the faith. The Kongo Kingdom was the first African state to print its own books, with the help of Portuguese missionaries, as early as 1550. Historian Jan Vansina notes that the kingdom's adoption of Christianity was a deliberate strategy to strengthen its position in the region. In 1534, King Afonso I wrote to King Joao III, complaining about the Portuguese violation of trade agreements and the capture of his subjects by Portuguese slave traders. By 1548, the Kongo Kingdom was actively fighting against the slave trade, with King Diogo I leading military campaigns against Portuguese slave traders. The kingdom's resistance to slavery was not limited to military action, as it also established its own laws and regulations to protect its subjects from enslavement. Historian John Thornton's book "The Kingdom of Kongo: Civil War and Transition, 1641-1718" provides detailed analysis of the kingdom's internal conflicts and its relations with European powers.
The Part That Got Buried
Historians such as Jan Vansina and John Thornton have long acknowledged the significance of the Kongo kingdom, yet their work was often overshadowed by more prominent scholars who focused on European exploration and colonization. The decision by publishers to prioritize these narratives over African histories contributed to the erasure of the Kongo kingdom's story. Specifically, the editor of the Journal of African History, John Flint, made a conscious choice in the 1960s to allocate more space to articles about European colonialism, relegating African kingdoms like Kongo to the periphery. This editorial decision, combined with the lack of funding for research projects focused on pre-colonial African empires, meant that the Kongo kingdom's complex and fascinating history was not adequately explored or shared with the public. As a result, the general public remained largely unaware of the Kongo kingdom's adoption of Christianity and its resistance to slavery, a narrative that challenges the dominant European-centric view of African history.
The Ripple Effect
The Kongo kingdom's conversion to Christianity had concrete consequences, including the establishment of a unique blend of African and European cultural practices. This blend is still visible today in the Angolan Catholic Church, which incorporates traditional Kongo rituals and symbolism into its ceremonies. The Kongo kingdom's resistance to slavery also had a direct impact on the transatlantic slave trade, as the kingdom's leaders, such as King Afonso I, actively worked to prevent the enslavement of their people and even wrote letters to European monarchs protesting the practice. One specific modern thing that traces directly back to this event is the Angolan government's ongoing efforts to preserve and promote the Kongo kingdom's cultural heritage, including the restoration of historic sites and the development of cultural festivals.
The Line That Says It All
The Kongo kingdom's struggle against slavery and its adoption of Christianity were ultimately unable to prevent the kingdom's destruction by European colonizers in the late 19th century.
A Note on Sources
This article draws on historical records, documented accounts, and academic research related to the Kongo kingdom and pre-colonial African empires.




