Origins Tio tradition holds that they have always inhabited the grassland plains; from neighbouring groups reporting that the Tio (eastern Teke) were already there when they arrived, it is known for certain that they were there from at least the 13th century. While Tio tradition also says that their kingdom has always existed,
Jan Vansina wrote that the political system of
squires/chiefs ( or ) who governed domains () likely evolved into kingship and statehood, and that the (king) was likely initially based on the northern plains. He considered the king to have derived authority from mystical prowess, with which he used to give titles to lords and squires and receive tribute. This is evidenced by a series of six
anvils dedicated to the king and five lords, who were all from the north, located near the Falls of
Lefini where
Nkwe Mbali (the national
nature spirit) was believed to reside. The association of kingship with
smithing is believed to have originated among the Tio before spreading to the kingdoms of
Loango and
Kongo. In 1491 the (Kongo's king) asked the Portuguese for help against the Tio. The earliest written mention of an '
was of a "Mukoko Ansiko" in 1507.' The Tio continued to war with Kongo throughout the 16th century, killing at least one of its manikongos (
Henrique I in 1568 and possibly
Bernardo I in 1567). At the same time the
Jaga invaded Kongo from the east, disrupting trade. Written records from this time mention multiple Tio kingdoms, possibly indicating a degree of decentralisation. They bordered
Mwene Muji to the northeast.
Kongo traditions claim the '''' sent them tribute. After being expelled from Kongo in the early-17th century, the Jaga moved north, settled near Loango, and overran the western Teke.
and royal authority In the 17th century there were two main trade routes from Pool Malebo: one from the
Vili in
Loango and one from the
Portuguese in
Luanda. Around 1700, following an influx of wealth from the Loango route, (boxes containing charms which legitimised power) were introduced among lords on the northern plains after diffusing from
Abala, creating an ideology of power detached from the king. A lord titled (based just north of the ) is said to have obtained them, and gave them to high lord , who was based at
Ntsaa (south of the Nkéni River). He then sold and distributed them among his (vassal lords), diminishing the king's authority. Tradition portrays as wealthy and powerful, and he was said to have owned lots of (luxury brass objects from Loango). His hunters (which included
Tswa) hunted elephants for ivory, and were sold into slavery if they came back empty-handed. He regularly declared "
war at the limits" on other lords in order to accrue ivory and slaves, and tradition recounts that he exploited every possible source of income. Using his wealth,
retinue,
muskets, and slaves, '''' came to be (leader) of all lords. On the Mbe plains in 1881, a dispute arose between '''' Ikukuri and the over their father's inheritance. War broke out, and '
was forced to flee to the Bobangi, coming to side with Stanley and the Association. ' Opontaba sided with '
while ' Iloo leant support to Ikukuri and . Opontaba came to have good relations with the Association, causing Ngaliema to attempt to blockade Leopoldville in 1883. The French and de Brazza returned, with whom Iloo ratified the treaty in April 1884, to which Opontaba and '''' were forced to agree, signifying a political victory for Iloo. The French brought copious amounts of gifts for the king, with lords receiving half of his amount; Brazzaville was founded in May. In response the Association pressured Opontaba to resume his hostility, and the French spread rumours of murder plots to the king. The French sent a garrison to Iloo's Mbe while the Association sent firearms to Opontaba. The result of the
Berlin Conference in 1885 neutralised the Franco-Belgian rivalry. Over the course of the next few years the French and the Association expanded the remit of their administrations, no longer needing their African allies. The Europeans became more violent and burnt down the Humbu's
Lemba, the Bobangi's
Mpila, and Ngaliema's Ntamo, as the Tio came to submit and focus on commerce. From 1888, the French began granting brass collars, a Tio symbol of rule, to lords at the Pool, and enacted taxation. The Mbe plains were ignored by the French, and the situation there at this time are unknown, other than that the hostility between Iloo and Opontaba dissipated. Iloo died in 1892. While kingship later returned, no future kings underwent , the king's installation ritual. Though Ngalifourou opposed nominations to the throne, '''' Mundzwaani was instated in 1928. He was deposed by the French and a series of short reigns followed, as the king's authority was reduced to less than that of a and Ngalifourou remained dominant. Her death in 1956 changed this dynamic, as the new '
could not play the same role. The French began giving kings a salary, car, and residence, though their authority remained muted. Likely because of this, a coalition of lords that included ' formed against the king, '
Ntsaalu. The Republic of Congo gained its independence in 1960. In 1964 the coalition of lords deposed Ntsaalu, replacing him with ' Iloo II, though this remained minor in
Congolese politics. He signed the 1995
Pact for Peace after the country's
civil war, and died in 1998. The (Queen Mother) appoints the ruler. The current monarch is , ruling since 2021. ==Government==