Vietnam: Polity Style: 1054-2024 - Archontology
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Vietnam: Polity Style: 1054-2024

3 Nov 1054 name of the state is changed to Đại Việt (Đại Việt Complete Annals, ch. II; vol. 1, p. 270 [1998 edition])
3 Nov 1054 - 23 Mar 1400 Đại Việt quốc (大越國) | Great Việt Realm
23 Mar 1400 name of the state is changed to Đại Ngu (Đại Việt Complete Annals, ch. VIII; vol. 2, pp. 199-200 [1998 edition])
23 Mar 1400 - 17 Jun 1407 Đại Ngu quốc (大虞國) | Great Ngu Realm
17 Jun 1407 emperor captured
5 Jul 1407 territory of the former empire of Đại Việt is annexed to Ming as a province in accordance with a decree of the emperor of Ming (Veritable Records of Ming, Reign of Tàizōng, Yǒnglè, Year 5 , month 6, day 1) [1]
10 Dec 1427 restoration of statehood and tributary relationship by agreement with Ming
29 Apr 1428 name of the state is changed to Đại Việt (Đại Việt Complete Annals, ch. X; vol. 2, p. 293 [1998 edition])
29 Apr 1428 - 24 Mar 1804 Đại Việt quốc (大越國) | Great Việt Realm
24 Mar 1804 name of the state is changed to Việt Nam (Đại Nam Veritable Records, Principal Records [chính biên], ch. XXIII; vol. 1, p. 588 [2002/2007 edition])
24 Mar 1804 - 27 Mar 1838 Việt Nam quốc (越南國) | State of Vietnam
27 Mar 1838 name of the state is changed to Đại Nam (Đại Nam Veritable Records, Principal Records [chính biên], ch. CXC; vol. 5, p. 276 [2002/2007 edition])
27 Mar 1838 - 12 Jun 1945 Đại Nam quốc (大南國) | Great Southern State
12 Jun 1945 - 24 Aug 1945 Đế quốc Việt Nam (帝國越南) | Empire of Vietnam
24 Aug 1945 act of abdication is signed by the Emperor (Cứu quốc, No. 33, 29 Aug 1945; Official Gazette, No. 1, 29 Sep 1945, p. 1) [2]
2 Sep 1945 Vietnam is proclaimed independent and sovereign state, public ceremony, Ba Đình Square, Hanoi (Cứu quốc, No. 36, 5 Sep 1945, pp. 1-2)
2 Sep 1945 - 2 Jul 1976 Việt Nam dân chủ cộng hòa | Democratic Republic of Vietnam [3]
2 Jul 1976 Vietnam is proclaimed independent and united nation under the name of Socialist Republic of Vietnam in accordance with a resolution passed by the National Assembly (Quốc hội) on 2 Jul 1976
2 Jul 1976 - Cộng hòa xã hội chủ nghĩa Việt Nam | Socialist Republic of Vietnam

[1] A territory under rebellion (1407-1414) was constituted as Đại Việt quốc (大越國).
[2] Act of abdication is dated 24 Aug 1945 (Cứu quốc, No. 33, 29 Aug 1945; Official Gazette, No. 1, 29 Sep 1945, p. 1). It was made publicly known on 25 Aug 1945 and then proclaimed at the ceremony of transfer of state authority to the Provisional Government at Huế on 30 Aug 1945.
[3] Geographically corresponded to North Vietnam.