The Fourth National Congress of the Party (December 1976) set out the national socialist revolution of the country, which decided to remove the content of the initial step with the expectation to complete the transition period within a five-year plan. In the Fourth Congress, the Vietnam Revolutionary Dissertation was approved, which was the new political platform of the Party. From analyzing the nature of Vietnamese society in the Indochinese War, the Communist Party pointed out that the resistance war was a national democratic revolution, that the task of anti-imperialist, liberating the nation was the focus, while simultaneously conducting the task of anti-feudalism, winning democratic rights. There must be a plan to carry out step by step those tasks and the national democratic revolution conducted by the people under the leadership of the Party would evolve into a socialist revolution.