Pierre Savorgnan de Brazza, an Italian-born French naval officer, signed a treaty with Makoko, king of the Bateke people, on September 10, 1880. This agreement established French presence at a site Brazza named after himself — the settlement that became Brazzaville. The treaty placed the territory under French protection without annexation, a diplomatic distinction that separated French methods from the concurrent Belgian colonization across the Congo River. French Equatorial Africa formed in 1910, combining four territories under a federation headquartered in Brazzaville. Congo-Brazzaville became the administrative center for Chad, Oubangui-Chari, and Gabon alongside its own territory.
The Brazzaville Conference convened January 30 to February 8, 1944, bringing colonial administrators and Free French leadership together during World War II. General de Gaulle attended, using French Equatorial Africa as his operational base after metropolitan France fell to Germany. The conference produced no immediate independence commitments but established labor reforms and African representation in French institutions. Case de Gaulle, the building where de Gaulle resided during his Brazzaville period, remains standing in the city center. Congo Republic gained full independence from France on August 15, 1960, with Abbé Fulbert Youlou becoming the first president. Youlou, a Catholic priest turned politician, led a government aligned closely with French interests and maintained conservative economic policies.
The Trois Glorieuses revolution occurred August 13-15, 1963, when trade unionists and youth movements forced Youlou from power after three days of street protests in Brazzaville. Alphonse Massamba-Débat assumed the presidency and declared Congo a socialist state, renaming the country the People's Republic of the Congo. Massamba-Débat established ties with communist nations and nationalized major industries. He lasted until 1968 when military officers, dissatisfied with his governance, orchestrated his removal. Marien Ngouabi, a military officer from the M'Bochi ethnic group in northern Congo, took control in 1970 and intensified the Marxist-Leninist orientation. Ngouabi founded the Congolese Party of Labour and aligned Congo firmly with the Soviet Union and China.
Unidentified assailants assassinated Marien Ngouabi on March 18, 1977, in Brazzaville. The attack occurred at his residence during midday, with multiple gunmen involved. Former president Massamba-Débat was executed days later, accused of conspiracy in the assassination, though doubts about his actual involvement persist. A military committee assumed power, eventually appointing Denis Sassou Nguesso, another northern military officer, as president in 1979. Sassou Nguesso maintained the socialist system through the 1980s while gradually opening to Western economic relations. Congo held its first multiparty elections in August 1992, with Pascal Lissouba, representing southern regions, defeating Sassou Nguesso. Lissouba's presidency lasted five years before political tensions between northern and southern factions escalated into armed conflict.
Civil war erupted in June 1997 when government forces attempted to disarm Sassou Nguesso's militia before scheduled elections. The fighting centered in Brazzaville, with Sassou Nguesso receiving military support from Angola. Lissouba's forces collapsed in October 1997, and Sassou Nguesso reclaimed the presidency. Conflict continued intermittently until 2002, particularly in the Pool region south of Brazzaville, where militias loyal to former interior minister Bernard Kolélas operated. A peace agreement signed in 2002 officially ended hostilities, though sporadic violence in Pool continued for several years. Sassou Nguesso has remained president through constitutional changes allowing extended terms.
The Kongo people constitute the largest ethnic group in Congo Republic, concentrated in the southern regions including Brazzaville, Pool, and Kouilou departments. Kongo subgroups include the Vili along the Atlantic coast near Pointe-Noire, the Lari around Brazzaville and the Pool Malebo area, and the Sundi in the Bouenza region near Dolisie. The Kongo ethnic zone extends into the Democratic Republic of Congo and Angola, creating cross-border cultural continuity. Historically, Kongo populations formed centralized kingdoms, most notably the Kingdom of Kongo, which controlled parts of modern Congo Republic's southern territory before European colonization.
The Teke, also called Bateke, occupy the Batéké Plateau in central Congo, particularly around Djambala and extending north toward Owando. Makoko, the Teke king who signed Brazza's 1880 treaty, held authority over Teke territories. The plateau's grassland environment shaped Teke economic practices, emphasizing trade and animal husbandry alongside agriculture. Teke society organized through clan structures rather than centralized kingdoms, with the Makoko serving as a spiritual and diplomatic authority more than an administrative ruler. The plateau's elevation, generally 400 to 830 meters, separates the Congo River basin to the east from southern lowlands.