Back in 1999, under what is known as the Yamoussoukro Decision, African countries planned to free their skies for air travel.
원문출처 : http://www.cnn.com/2018/01/31/africa/african-union-single-air-airline/index.html
원문출처 : http://www.cnn.com/2018/01/31/africa/african-union-single-air-airline/index.html