Early history In precolonial times, the region of Surigao was inhabited by the
Visayan Surigaonon people in the coastal areas, as well as
Lumad groups in the interiors like the
Mandaya,
Mansaka,
Mamanwa and
Manobo.
Spanish colonial era During the
Spanish Occupation in 1860, six military districts were created in Mindanao, with Surigao and Agusan forming the "East District". In 1870, the district was renamed to "Distrito de Surigao".
American colonial era In 1901, Distrito de Surigao became
chartered province. Agusan became an
independent province in 1907 during the
American era, when it was separated from Surigao. At the time of its inception, it was classified as 4th Class province with an annual income of over 300,000.00. Seven years later, because of rapid increase of revenue collection particularly from the logging ventures, it has been reclassified as Ist Class B and in 1980 as Ist Class A with an estimated annual income of around 13,000,000. It has been reclassified as 2nd Class with a revenue adding up to 315,888,300.63. Recaredo B. Castillo was the appointed first governor and subsequently elected governor while Vicente L. Pimentel was the first elected congressman. The province was formed with 13 municipalities. Six more were added, raising the number to 19 with
Tandag as the capital. Two of its municipalities have been elevated to cities; the first was
Bislig City.
Contemporary The capital town
Tandag became a component city by virtue of
Republic Act No. 9392 which sought to convert the town into a city. The law was ratified on June 23, 2007. However, the cityhood status was lost twice in the years 2008 and 2010 after the
LCP questioned the validity of the cityhood law. The cityhood status was reaffirmed after the
court finalized its ruling on February 15, 2011 which declared the cityhood law constitutional. House Bill No. 2336 of the 19th Congress seeks to separate the southern part of the province to be formed as the new Province of
Surigao Oriental. Once the bill is signed into law it will be approved and ratified in a referendum. ==Geography==