Briefly describe the process of disintegration of Vienna system.

Answer: (1) The breakup of holy alliance: Greek independence marked the beginning of the breakup of the alliance, Belgian independence led to the final breakup of holy alliance, and their independence changed the map of Europe for the first time. (2) The Vienna system was seriously shaken; 19 The revolutionary movement in the 1920s and 1930s impacted the Vienna system, and the July Revolution in France made the Vienna system exist in name only. (3) The1848 revolution completely disintegrated the Vienna system. (4) 19 The bourgeois revolution and dynasty unification war in the 1960s and 1970s completely shattered the Vienna system;