1. Achievements of Kongo Kingdom :
(i) Administration : The administration was quite efficient and highly centralised. The king was given divine honour. He was elected from some aristocratic family. The king was assisted by assemblies who had vast powers. The king did not have absolute power. Kingship was not hereditary.
(ii) Institution of Slaves : Though slavery was practised yet slaves were not a commodity. They lived like members of the masters' household. They could own personal property. They could change their masters.
2. The Political System : Many states had emerged near the river Kongo in ancient times. These states had united themselves into a large kingdom known as the Kingdom of Kongo.