The Democratic Republic of the Congo ( République démocratique du Congo ), also known as DR Congo, the DRC, Congo-Kinshasa, or simply the Congo, is the southernmost country located in Central Africa. It is sometimes referred to by its former name of Zaire, which was its official name between 1971 and 1997. The DRC borders the Central African Republic to the north; South Sudan to the northeast; Uganda, Rwanda, Burundi and Tanzania to the east; Zambia to the south; Angola to the southwest; and the Republic of the Congo and the Atlantic Ocean to the west. It is the second-largest country in Africa after Algeria (the largest in Sub-Saharan Africa) by area and the 11th-largest in the world. With a population of over million, the Democratic Republic of the Congo is the most populated officially Francophone country, the fourth-most-populated country in Africa, and the 16th-most-populated country in the world.
Centred on the Congo Basin, the territory of the DRC was first inhabited by Central African foragers around 90,000 years ago and was reached by the Bantu expansion about 3,000 years ago. In the west, the Kingdom of Kongo ruled around the mouth of the Congo River from the 14th to 19th centuries. In the centre and east, the kingdoms of Luba and Lunda ruled from the 16th and 17th centuries to the 19th century. In the 1870s, just before the onset of the Scramble for Africa, European exploration of the Congo Basin was carried out, first led by Henry Morton Stanley under the sponsorship of King Leopold II of Belgium. Leopold formally acquired rights to the Congo territory at the Berlin Conference in 1885 and made the land his private property, naming it the Congo Free State. During the Free State, the colonial military unit, the Force Publique, forced the local population to produce rubber, and from 1885 to 1908, millions of Congolese died as a consequence of disease and exploitation. In 1908, Belgium, despite initial reluctance, formally annexed the Free State, which became the Belgian Congo.
The Belgian Congo achieved independence on 30 June 1960 under the name Republic of the Congo. Congolese nationalist Patrice Lumumba was elected the first Prime Minister, while Joseph Kasa-Vubu became the first President. Conflict arose over the administration of the territory, which became known as the Congo Crisis. The provinces of Katanga, under Moïse Tshombe, and South Kasai attempted to secede. After Lumumba turned to the Soviet Union for assistance in the crisis, the U.S. and Belgium became wary and oversaw his removal from office by Kasa-Vubu on 5 September and ultimate execution by Belgian-led Katangese troops on 17 January 1961. On 25 November 1965, Army Chief of Staff Joseph-Désiré Mobutu, who later renamed himself Mobutu Sese Seko, officially came into power through a coup d'état. In 1971, he renamed the country Zaire. The country was run as a dictatorial one-party state, with his Popular Movement of the Revolution as the sole legal party. Mobutu's government received considerable support from the United States, due to its anti-communist stance during the Cold War. By the early 1990s, Mobutu's government began to weaken. Destabilisation in the east resulting from the 1994 Rwandan genocide and disenfranchisement among the eastern Banyamulenge (Congolese Tutsi) population led to a 1996 invasion led by Tutsi FPR-ruled Rwanda, which began the First Congo War.
On 17 May 1997, Laurent-Désiré Kabila, a leader of Tutsi forces from the province of South Kivu, became President after Mobutu fled to Morocco, reverting the country's name to the Democratic Republic of the Congo. Tensions between President Kabila and the Rwandan and Tutsi presence in the country led to the Second Congo War from 1998 to 2003. Ultimately, nine African countries and around twenty armed groups became involved in the war, which resulted in the deaths of 5.4 million people. The two wars devastated the country. President Laurent-Désiré Kabila was assassinated by one of his bodyguards on 16 January 2001 and was succeeded eight days later as President by his son Joseph.
The Democratic Republic of the Congo is extremely rich in natural resources but has had political instability, a lack of infrastructure, issues with corruption and centuries of both commercial and colonial extraction and exploitation with little holistic development. Besides the capital Kinshasa, the two next largest cities Lubumbashi and Mbuji-Mayi are both mining communities. DR Congo's largest export is raw minerals, with China accepting over 50% of DRC's exports in 2012. In 2016, DR Congo's level of human development was ranked 176th out of 187 countries by the Human Development Index. , around 600,000 Congolese have fled to neighbouring countries from conflicts in the centre and east of the DRC. Two million children risk starvation, and the fighting has displaced 4.5 million people. The sovereign state is a member of the United Nations, Non-Aligned Movement, African Union and COMESA.