The decree of 2 May 1910 consolidated Belgian colonial control in the Congo, as it formalized the administrative system of chiefdoms and sectors. The decree also established a dual
judicial system by separating the legal framework applied to colonized populations from that applied to European colonizers. Although chiefs and sub-chiefs were permitted to exercise authority, their decisions were only valid insofar as they complied with colonial regulations. Post-colonial legislation largely retained the foundations of this colonial system, with Article 124 of Ordinance-Law No. 82-006 of 25 February 1982 (
Republic of Zaire) and Decree-Law No. 081 of 2 July 1998 (
Democratic Republic of the Congo) define the chiefdoms and sectors as decentralized administrative entities composed of a generally homogeneous group of traditional communities organized according to custom and led by a customary chief recognized by public authorities. The
2006 Constitution of the Democratic Republic of the Congo, like earlier constitutions following the Colonial Charter of 1908, dedicates only a single provision to customary authority. Article 207 recognizes customary authority and stipulates that it must be exercised in accordance with local custom, provided that such customs do not contradict the Constitution, statutory law, public order, or moral standards. It also states that customary chiefs who wish to hold elected public office must submit themselves to election and that customary authorities have a duty to promote national unity and cohesion. Chiefdoms and sectors are administered according to customary practices, provided that such customs do not conflict with public law, legislation, or regulatory provisions. In essence, this definition largely reproduces the colonial model of governance by organizing indigenous populations into chiefdoms and sectors, while assigning the provincial governor the authority to determine the number and designation of these administrative divisions within each territory. Within customary systems themselves, succession to chiefdoms and sectors typically follows two principal modes: hereditary succession and rotational succession. In hereditary systems, succession is vertical. In
patriarchal societies, such as among the
Luba, authority usually passes from father to son or, failing that, to a brother. In
matrilineal societies, such as among the
Kongo,
Bemba, and
Yaka, succession may pass from a man to his sister's son or, alternatively, to a brother. The rotational system operates on a horizontal principle of succession, and, in this arrangement, leadership rotates among two or more clans according to agreements established between the communities concerned. In many societies, the ruling family council plays an important role in determining succession. This council may approve or reject the candidate designated by custom, which thus ensures that the chosen leader is accepted by the broader lineage. Some traditions also recognize the possibility of women inheriting customary authority, though such cases are less common. ==List of chiefdoms and sectors==