[6] From January to February 1900, President Emilio Aguinaldo stayed in Oscariz while fleeing from American forces during the Philippine-American War.

[7] In the middle of the 1920s when the San Jose–Santa Fe national road opened, Ilocano migrants from the Central Plain of Luzon, particularly Tarlac, Pangasinan, and Nueva Ecija, arrived in bull carts to settle on this vast area covered with weeds called “samon” as homesteaders.

As required by statutes, these people stayed right on their 24 hectares (59 acres) farms to clear the lot in order call it their own.

For more than ten years amidst hardships and sufferings due to malaria and unfavorable weather conditions, the pioneers labored to convert their homestead into a productive farm with palay as their main crop.

With the completion of the Magat Dam in 1983, more areas were converted into irrigated rice lands which attracted further migration to the municipality, including Igorots and Ifugaos from the Cordilleras.

The municipality of Ramon has a semi-radial but more defined linear development along the national road from Santiago City in the south to San Mateo towards the north.

With the completion of the Magat River Multi-purpose high dam near the Isabela-Ifugao provincial boundary, the trend of expansion has deviated westward.

The dam is a major employer in Barangay General Aguinaldo and has the works buildings and staff compounds situated there also.

Ramon functions as a satellite town of Santiago City, a major growth center in southern Isabela.

The Magat River Multi-purpose project, likewise, provides the municipality economic and social gains brought about by the influx of technological advancements like irrigation and electric power.

As a municipality in the Province of Isabela, government officials in the provincial level are voted by the electorates of the town.