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Argentina: Polity Style: 1810-2024

23 May 1810 viceroy of Río de la Plata relinquished his functions, eventually transferring it to a government created in Buenos Aires [Actas capitular, 30-38]
23 May 1810 - 22 Nov 1811 Provincias del Río de la Plata [1]
22 Nov 1811 official style of the government is changed to Gobierno Superior Provisional de las Provincias Unidas del Río de la Plata, a nombre del Sr. D. Fernando VII in accordance with Art. 8 of the Reglamento ("Estatuto provisional") approved by the government 22 Nov 1811 [Registro nacional RA, item 269, 1:127-128]
22 Nov 1811 - 25 May 1853 Provincias Unidas del Río de la Plata [2]
9 Jul 1816 independence act of Provincias Unidas en/de Sud América is passed, session of the Congreso Nacional, Tucumán [Redactor del Congreso Nacional, No. 6, 23 Aug 1816, pp. 1-6; Redactor del Congreso Nacional, No. 9, 24 Sep 1816, pp. 5-6; Gaceta de Buenos Aires, No. 68, 17 Aug 1816, pp. 277-278]
25 May 1853 a federal constitution approved and signed at the session of the Congreso Constituyente in Santa Fé 1 May 1853 is promulgated, decree of the Supreme Director of the Confederation signed 25 May 1853 at San José de Flores [Congreso Constituyente (1852), 189-191; Registro nacional RA, item 3052, 3:65-73; Registro nacional RA, item 3054, 3:76]
25 May 1853 - 1 Oct 1860 Confederación Argentina
1 Oct 1860 Nación Argentina is introduced as a term of reference to the federation and all of its institutions in the articles of the amended Constitution of 1853 (approved at the session of the Convención Nacional in Santa Fé 23 Sep 1860, promulgated by the President of the Confederation at Paraná 1 Oct 1860) [Registro nacional RA, items 5208-5209, 4:333-343] [3]
1 Oct 1860 - Nación Argentina
8 Oct 1860 República Argentina is designated as the style of administrative acts, executive order of the President of the Confederation of 8 Oct 1860 [Registro nacional RA, item 5227, 4:346]

[1] After gradual recognition of the Governing Junta of Buenos Aires as national government, the word "United" was added.
[2] Also in official use (see a Note): Provincias Unidas en/de Sud América, Provincias Unidas del Río de la Plata en Sud América, República de las Provincias Unidas del Río de la Plata, República Argentina and Confederación Argentina.
[3] Art. 35 of the Constitution of 1853 (as amended in 1860) recognised Provincias Unidas del Río de la Plata, República Argentina, Confederación Argentina as official styles, but designating Nación Argentina as the style for legislation.