Teke oral tradition holds that Mabiala Mantsi, also known as King Mbé, united the Bateke tribes, centralised his governance, and expanded using militaristic and diplomatic skill.

[1][better source needed] The king received tribute from vassals and did not maintain a military presence outside the capital.

[3]: 30 In the early 17th century, the Anziku population controlled the copper mines around Kongo's northeast border and may have been there specifically as a buffer.

When the Anziku groups consolidated to form their own independent kingdom, Kongo proceeded to take over the mines personally.

In 1880, the last independent Anziku king Makoko signed a treaty of vassalage with the French naval officer Pierre Savorgnan de Brazza.

By 1600, Anziku controlled the lower Congo River and extended northwest to the upper Kouilou-Niari basin.

The Anziku kingdom manufactured and sold fabrics made of leaves, which doubled as currency throughout the region.

Along with these products, the Anziku sold slaves which they brought to the coast in return for cowries, salt, silk, linen and glass.