[3] During the colonial period it belonged to the province of Izalcos (later called the mayor's office of Sonsonate) and in 1770 it was a town attached to the parish of Caluco.

[3] On March 21, 1901, the National Legislative Assembly, at the proposal of the Executive Branch, decreed the extinction of the towns of Sonzacate, San Antonio del Monte, and Nahulingo.

The Municipality of Sonsonate received through inventory the archives, furniture, accounts and stocks in kind and money of the towns, which would be governed and ruled as neighborhoods of the city, and all the properties of the municipalities of the extinct towns became the property of that of Sonsonate.

The decree was approved by President Tomás Regalado on March 23 and published in the Official Gazette on March 28[4].On March 28, 1905, the National Legislative Assembly issued a legislative decree that reestablished the neighborhoods of San Antonio del Monte, Nahulingo and Sonzacate as towns; the Municipality of Sonsonate delivered to the respective municipalities the corresponding furniture, archives and documents.

The decree was sanctioned by President Pedro José Escalón on the same day, March 28.