Question: When did the country formerly known as Zaire become independent?

full_context: Document 1: Central African Republic: What is today the Central African Republic has been inhabited for millennia; however, the country's current borders were established by France, which ruled the country as a colony starting in the late 19th century. After gaining independence from France in 1960, the Central African Republic was ruled by a series of autocratic leaders; by the 1990s, calls for democracy led to the first multi-party democratic elections in 1993. Ange-Félix Patassé became president, but was later removed by General François Bozizé in the 2003 coup. The Central African Republic Bush War began in 2004 and, despite a peace treaty in 2007 and another in 2011, fighting broke out between various factions in December 2012, leading to ethnic and religious cleansing of the Muslim minority and massive population displacement in 2013 and 2014.
Document 2: Republic of the Congo: The region was dominated by Bantu-speaking tribes at least 3,000 years ago, who built trade links leading into the Congo River basin. Congo was formerly part of the French colony of Equatorial Africa. The Republic of the Congo was established on the 28th of November 1958 but gained independence from France in 1960. The sovereign state has had multi-party elections since 1992, although a democratically elected government was ousted in the 1997 Republic of the Congo Civil War, and President Denis Sassou Nguesso, who first came to power in 1979, has ruled for 35 of the past 40 years.
Document 3: Joseph Kabila: On 28 March 2004, an apparent coup attempt or mutiny around the capital Kinshasa, allegedly by members of the former guard of former president Mobutu Sese Seko (who had been ousted by Kabila's father in 1997 and died in the same year), failed. On 11 June 2004, coup plotters led by Major Eric Lenge allegedly attempted to take power and announced on state radio that the transitional government was suspended, but were defeated by loyalist troops.
Document 4: Republic of the Congo: Under the 1963 constitution, Massamba-Débat was elected President for a five-year term. During Massamba-Débat's term in office the regime adopted "scientific socialism" as the country's constitutional ideology. In 1965, Congo established relations with the Soviet Union, the People's Republic of China, North Korea and North Vietnam. Massamba-Débat's regime also invited several hundred Cuban army troops into the country to train his party's militia units and these troops helped his government survive a coup in 1966 led by paratroopers loyal to future President Marien Ngouabi. Nevertheless, Massamba-Débat was unable to reconcile various institutional, tribal and ideological factions within the country and his regime ended abruptly with a bloodless coup d'état in September 1968.
Document 5: Republic of the Congo: Congo's democratic progress was derailed in 1997 when Lissouba and Sassou started to fight for power in the civil war. As presidential elections scheduled for July 1997 approached, tensions between the Lissouba and Sassou camps mounted. On June 5, President Lissouba's government forces surrounded Sassou's compound in Brazzaville and Sassou ordered members of his private militia (known as "Cobras") to resist. Thus began a four-month conflict that destroyed or damaged much of Brazzaville and caused tens of thousands of civilian deaths. In early October, the Angolan socialist régime began an invasion of Congo to install Sassou in power. In mid-October, the Lissouba government fell. Soon thereafter, Sassou declared himself president.
Document 6: Republic of the Congo: Following the revision of the French constitution that established the Fifth Republic in 1958, the AEF dissolved into its constituent parts, each of which became an autonomous colony within the French Community. During these reforms, Middle Congo became known as the Republic of the Congo in 1958 and published its first constitution in 1959. Antagonism between the pro-Opangault Mbochis and the pro-Youlou Balalis resulted in a series of riots in Brazzaville in February 1959, which the French Army subdued.
Document 7: Republic of the Congo: The Republic of the Congo received full independence from France on August 15, 1960. Fulbert Youlou ruled as the country's first president until labour elements and rival political parties instigated a three-day uprising that ousted him. The Congolese military took charge of the country briefly and installed a civilian provisional government headed by Alphonse Massamba-Débat.
Document 8: Republic of the Congo: Sassou Nguesso aligned the country with the Eastern Bloc and signed a twenty-year friendship pact with the Soviet Union. Over the years, Sassou had to rely more on political repression and less on patronage to maintain his dictatorship.
Document 9: Republic of the Congo: Pascal Lissouba, who became Congo's first elected president (1992–1997) during the period of multi-party democracy, attempted to implement economic reforms with IMF backing to liberalise the economy. In June 1996 the IMF approved a three-year SDR69.5m (US$100m) enhanced structural adjustment facility (ESAF) and was on the verge of announcing a renewed annual agreement when civil war broke out in Congo in mid-1997.
Document 10: Republic of the Congo: The region was dominated by Bantu-speaking tribes, who built trade links leading into the Congo River basin. Congo-Brazzaville was formerly part of the French colony of Equatorial Africa. Upon independence in 1960, the former colony of French Congo became the Republic of the Congo. The People's Republic of the Congo was a Marxist–Leninist one-party state from 1970 to 1991. Multi-party elections have been held since 1992, although a democratically elected government was ousted in the 1997 Republic of the Congo Civil War and President Denis Sassou Nguesso has ruled for 26 of the past 36 years.
Document 11: Joseph Kabila: Joseph Kabila Kabange (; ; born 4 June 1971) is a Congolese politician who served as President of the Democratic Republic of the Congo between January 2001 and January 2019. He took office ten days after the assassination of his father, President Laurent-Désiré Kabila. He was elected as President in 2006 and re-elected in 2011 for a second term. Since stepping down after the 2018 election, Kabila, as a former president, will be a senator for life, according to the Constitution of the DRC.
Document 12: Republic of the Congo: The Republic of the Congo (French: République du Congo), also known as Congo, Congo Republic, West Congo[citation needed], or Congo-Brazzaville, is a country located in Central Africa. It is bordered by five countries: Gabon to the west; Cameroon to the northwest; the Central African Republic to the northeast; the Democratic Republic of the Congo to the east and south; and the Angolan exclave of Cabinda to the southwest.
Document 13: Republic of the Congo: In the early 1980s, rapidly rising oil revenues enabled the government to finance large-scale development projects with GDP growth averaging 5% annually, one of the highest rates in Africa. The government has mortgaged a substantial portion of its petroleum earnings, contributing to a shortage of revenues. January 12, 1994 devaluation of Franc Zone currencies by 50% resulted in inflation of 46% in 1994, but inflation has subsided since.
Document 14: Zaire: Zaire (/ zɑːˈɪər /), officially the Republic of Zaire (French: République du Zaïre; French pronunciation: ​ (za. iʁ)), was the name for the Democratic Republic of the Congo that existed between 1971 and 1997 in Central Africa. The country was a one - party totalitarian dictatorship, run by Mobutu Sese Seko and his ruling Popular Movement of the Revolution party. Zaire was established following Mobutu's seizure of power in a military coup in 1965, following five years of political upheaval following independence known as the Congo Crisis. Zaire had a strongly centralist constitution and foreign assets were nationalised. The period is sometimes referred to as the Second Congolese Republic.
Document 15: History of the Democratic Republic of the Congo: After an uprising by the Congolese people, Belgium surrendered to the independence of the Congo in 1960. However, the Congo remained unstable because tribal leaders had more power than the central government. Prime Minister Patrice Lumumba tried to restore order with the aid of the Soviet Union as part of the Cold War, causing the United States to support a coup led by Colonel Joseph Mobutu in 1965. Mobutu quickly seized complete power of the Congo and renamed the country Zaire. He sought to Africanize the country, changing his own name to Mobutu Sese Seko, and demanded that African citizens change their Western names to traditional African names. Mobutu sought to repress any opposition to his rule, in which he successfully did throughout the 1980s. However, with his regime weakened in the 1990s, Mobutu was forced to agree to a power - sharing government with the opposition party. Mobutu remained the head of state and promised elections within the next two years that never took place.
ground_truth: 1960
sub_queries: zaire is the former name of which african nation Answer: the Democratic Republic of the Congo
when did the Democratic Republic of the Congo become independent Answer: 1960