Question: The Colombian airline that has been the national airline and flag carrier of Colombia since 1919 is wholly owned by a company headquartered in what country?

Context articles: Air Tanzania
LATAM Colombia
Avianca
Air Nicaragua
Copa Airlines
China Airlines
Boliviana de Aviación
National Liberation Army (Colombia)
Cathay Dragon
Synergy Group

Air Tanzania Company Limited (ATCL) (Swahili: "Kampuni ya Ndege Tanzania" ) is the flag carrier airline of Tanzania based in Dar es Salaam with its hub at Julius Nyerere International Airport.
 It was established as Air Tanzania Corporation (ATC) in 1977 after the dissolution of East African Airways and has been a member of the African Airlines Association since its inception.
 The airline was wholly owned by the Tanzanian Government until 2002 when it was partially privatised as per the directive of the Bretton Woods Institutions to implement the country's Structural Adjustment Program.
 The government therefore reduced its shareholding to 51 percent and entered into a partnership with South African Airways.
LATAM Airlines Colombia, formerly known as LAN Colombia, and previously as Aerovías de Integración Regional S.A. (Acronym: "AIRES", lit.
 "airs"), is a Colombian airline.
 It is the second-largest air carrier in Colombia.
Avianca S.A. (acronym in Spanish for "Aerovías del Continente Americano S.A. "), Airways of the American Continent, is a Colombian airline that has been the national airline and flag carrier of Colombia since 5 December 1919, when it was initially registered under the name SCADTA.
 It is headquartered in Bogotá, D.C. with its main hub at El Dorado International Airport.
 Avianca also comprises a group of seven Latin American airlines, whose operations are combined to function as one airline using a code sharing system.
 Avianca is the largest airline in Colombia and second largest in Latin America.
 Avianca together with its subsidiaries has the most extensive network of destinations in Latin America.
 It is wholly owned by Synergy Group S.A., a South American holding company established by Germán Efromovich and specializing in air transport.
 It is listed on the Colombia Stock Exchange.
Nicaragua Airways is the potential future national flag carrier of Nicaragua.
 Its main base is Augusto C. Sandino International Airport, Managua.
 It is the first time in 20 years that Nicaragua will have a national flag carrier, after Aeronica ceased operations in 1991.
 Since then, the flag carrier status was awarded to Nicaragüense de Aviación also known as NICA Airlines.
 Several airlines had tried to become the Nicaraguan flag carrier like CAAL (Central American Airlines), SANSA (Servicios Aereos Nicaraguenses S.A.) but none of these survived a year.
 Today even NICA Airlines (6Y) is registered as the national airline of Nicaragua, the only international flight it operated once (Managua to Miami) and is done under the TACA code (TA) as a full TACA Airlines flight.
Compañía Panameña de Aviación, S.A., () (commonly referred to and branded simply as "Copa Airlines") is the flag carrier of Panama.
 It is headquartered in Panama City, Panama, with its main hub at Tocumen International Airport.
 It operates more than 315 daily scheduled flights to 74 destinations in 31 countries around North, Central and South America, and the Caribbean.
 Copa is a subsidiary of Copa Holdings, S.A. as well as a member of the Star Alliance.
 The airline is also the main operator and owner of Colombian airline AeroRepública, currently known as Copa Airlines Colombia.
China Airlines (CAL) () () is the flag carrier and largest airline of the Republic of China (Taiwan).
 It is headquartered in Taoyuan International Airport and has 12,607 regular employees.
 China Airlines operates over 1,400 flights weekly to 118 airports in 115 cities (including codeshare) across Asia, Europe, North America and Oceania.
 The cargo division operates 91 pure freighter flights weekly.
 The carrier was, in 2013, the 29th and 10th largest airline in the world in terms of passenger revenue per kilometer (RPK) and freight RPK, respectively.
 China Airlines has three airline subsidiaries: Mandarin Airlines operates flights to domestic and low-demand regional destinations; China Airlines Cargo, a member of Skyteam Cargo, operates a fleet of freighter aircraft and manages its parent airline's cargo-hold capacity; Tigerair Taiwan is a low-cost carrier established by China Airlines and Singaporean airline group Tigerair Holdings and is wholly owned by China Airlines Group.
Boliviana de Aviación, often referred to as simply BoA, is the flag carrier airline of the Plurinational State of Bolivia and is wholly owned by the country's government.
 It was established in October 2007 and began operations in March 2009.
 The airline is headquartered in Cochabamba with its main hub at Jorge Wilstermann International Airport and focus cities at El Alto International Airport and Viru Viru International Airport.
 Most international flights, however, including long-haul services to Madrid and Miami operate out of Viru Viru in Santa Cruz de la Sierra.
 Boliviana de Aviación currently flies to 13 destinations in 5 countries and is the largest airline in Bolivia in terms of fleet size and passengers carried.
The National Liberation Army (Spanish: Ejército de Liberación Nacional, ELN) is an armed group involved in the continuing Colombian armed conflict, which has existed in Colombia since 1964.
 The ELN advocate a composite communist ideology of Marxism and liberation theology.
 They conduct military operations throughout the national territory of Colombia; in 2013, it was estimated that the ELN forces consisted of between 1,380 and 3,000 guerrillas.
 The ELN is the lesser known of two communist guerrilla armies who operate in Colombia; the other guerrilla army is the Revolutionary Armed Forces of Colombia (FARC–EP) who are Marxist–Leninist in their approach to the national liberation of Colombia.
 According to former ELN national directorate member Felipe Torres, one fifth of ELN supporters have taken up arms.
 The ELN has been classified as a terrorist organization by the governments of Colombia, Peru, United States, Canada and the European Union.
Hong Kong Dragon Airlines Ltd (Chinese: 港龍航空公司), operating brand as Cathay Dragon (Chinese: 國泰港龍航空) and previously as Dragonair, is a Hong Kong-based international regional airline, with its corporate headquarters, Cathay Dragon House, and main hub at Hong Kong International Airport.
 As of 30 October 2013, the airline operates a scheduled passenger network to 44 destinations in 13 countries and territories across Asia.
 Additionally, the airline has 3 codeshares on routes which are served by partner airlines.
 It has an all Airbus fleet of 41 aircraft, consisting of A320s, A321s and A330s. Cathay Dragon is a wholly owned subsidiary of Hong Kong's flag carrier, Cathay Pacific, and is an affiliate member of the Oneworld airline alliance.
 The airline was founded on May 24, 1985 by Chao Kuang Piu, the airline's present honorary chairman.
 Its maiden flight departed Hong Kong for Kota Kinabalu, Malaysia after being granted an air operator's certificate (AOC) by the Hong Kong Government in July 1985.
 In 2010, Dragonair, together with its parent, Cathay Pacific, operated over 138,000 flights, carried nearly 27 million passengers and over 1.80 billion kg of cargo and mail.
Synergy Group Corp. is a South American conglomerate created and owned by Germán Efromovich, an entrepreneur holding multiple citizenship of Brazil, Colombia and Poland.
 The group is headquartered in Rio de Janeiro, Brazil.
 It operates several airlines in South America, among which are Avianca Holdings, with a 66.66% stake, and is active in the exploration of oil and natural gas throughout the region.
 Additionally, it operates hydroelectric power plants, participates in the construction of telecommunications infrastructure, shipbuilding and technical inspections, radiochemistry, radiopharmaceuticals, agriculture and hospitality.