After the the Southern Liberation and national reunification(30-4-1975), one of the leading demands was suggested is to build up the complete national governmental system. In November, 1975, National Political Consultative Conference was held in Saigon (now Ho Chi Minh City) by all representatives of two parts(North and South) of the country to discuss and come to compromise on policy, way and solution to unify national central government. On 26-4-1976 National Assembly Election was held nationwide. At the end of June, 1976, the united Assembly organized the first meeting to decide national flag, national emblem, national anthem, capital as well as to elect human forces for central organs and decide the three-rank system of local authorithy the new era of development.