El Salvador: Polity Style: 1821-2026

21 Sep 1821 - 9 Feb 1823	Provincia de San Salvador
10 Feb 1823 - 1 Jul 1823	incorporated into Mexico
1 Jul 1823 - 22 Apr 1824	Provincia de San Salvador
1 Jul 1823 - 2 Feb 1841	forms a part of the Central-American Federation
22 Apr 1824 - 18 Feb 1859	Estado del Salvador
18 Feb 1859	the State of El Salvador reassumes its external sovereignty and is declared a free, sovereign and independent republic, in accordance with a decree passed by the Chamber of Deputies (Cámara de Diputados) on 25 Jan 1859, and by the Chamber of Senators (Cámara de Senadores) on 8 Feb 1859, promulgated on 18 Feb 1859 (El Salvador—Official Gazette, No. 88, 19 Mar 1859, p. 1)
18 Feb 1859 - 17 Sep 1896	República del Salvador :: República de El Salvador [1][2]
15 Sep 1896	forms a part of the Central-American Federation and retains sovereignty and independence upon the exchange of the ratifications of the Treaty of Union signed at Amapala, Honduras, 20 Jun 1895 (El Salvador—Official Gazette, No. 217, 17 Sep 1896, pp. 1445-1446)
17 Sep 1896	change in the polity style is prescribed by Art. 27 of the Standing Orders of the Diet of the Central-American Federation (Reglamento Interior de la Dieta de la República Mayor de Centro-América) passed by the Diet 17 Sep 1896 in San Salvador (El Salvador—Official Gazette, No. 219, 19 Sep 1896, pp. 1457-1458)
17 Sep 1896 - 25 Nov 1898	Estado del Salvador (also Estado de El Salvador)
25 Nov 1898	the Republic of El Salvador terminates its accession to the Pact of Amapala and assumes full autonomy and independence in accordance with a decree issued by the Provisional President of the Republic of El Salvador in San Salvador on 25 Nov 1898 (El Salvador—Official Gazette, No. 279, 25 Nov 1898, p. 2269)
25 Nov 1898 - 1 Oct 1921	República de El Salvador [3]
9 Jun 1915	the use of the form "El Salvador" as part of the official name of the Republic is legally certified (resolution passed by Asamblea Nacional Legislativa 7 Jun 1915, promulgated as decree 8 Jun 1915, published 9 Jun 1915) (El Salvador—Official Gazette, No. 133, 9 Jun 1915, p. 1095)
1 Oct 1921	El Salvador forms a part of the Central-American Federation and retains sovereignty and independence upon the taking effect of the Constitution of the Republic of Central America (approved by the Legislative National Assembly of the Federation 9 Sep 1921, becomes effective in accordance with Art. 209 on 1 Oct 1921), name changed in compliance with Art. 1 of the Constitution (El Salvador—Official Gazette, No. 212, 19 Sep 1921, pp. 1589-1598)
1 Oct 1921 - 4 Feb 1922	Estado de El Salvador
4 Feb 1922	El Salvador resumes full sovereignty and independence (resolution of the Legislative National Assembly of 4 Feb 1922, promulgated as decree 4 Feb 1922, effective on publication 4 Feb 1922) (El Salvador—Official Gazette, No. 29, 4 Feb 1922, p. 157)
4 Feb 1922 -	República de El Salvador [3]

The decree of 18 Feb 1859 made no explicit provision for a change in polity style, but República del Salvador gradually entered official use. The Constitutions of 1864, 1871, 1883, and 1886, including the amended versions of 1872 and 1880, likewise omitted any official designation, referring to the polity as República del Salvador and, in some instances, República Salvadoreña, Nación Salvadoreña, or Salvador.
The first documented appearances of República de El Salvador date from 1890, when, for example, the title of the official gazette was changed on 7 Oct 1890 from "República del Salvador—Centro América" to "República de El Salvador—Centro América". The title subsequently reverted to the original form and was later altered on several occasions. References to del Salvador and de El Salvador were used intermittently in official documentation, with usage gradually stabilizing in favor of El Salvador in the early 20th century; the designation was not legally defined until 1915.
This form is recorded in official use but lacked constitutional sanction. A related form, República del Salvador, appears in the title of the Constitution of 1886 (in force 1886–1939 and 1944–1948). Following the entry into force of the Constitution of 1939, and in all subsequent Constitutions, El Salvador and República are used interchangeably to denote the polity.