Pirate is considered as one of the oldest professions in the world. The existence of pirates in the archipelago was first recorded in the 5th century AD. In the period of 15th to the 16th century, pirate activities increased due to political and economic changes in the archipelago. One of them was the arrival of European traders which made most people in the archipelago encouraged to do piracy, including those done by Bajo tribe. The tribe which is from Sulawesi was a respected pirate at that time who had a wide operations area in the archipelago. The piracy targets are Europeans and indigenous traders. Bajo tribe was not only good at piracy but also had a concern for marine and coastal conservation. The coastal areas Preservation can be seen from the efforts to preserve coral reefs, fish and mangrove.

Article entitled "Tinjauan Historis Benteng VOC Di Jepara" (Historical review of the VOC Fortress at Jepara") discussed issues about background and purpose the building of the fortress. Furthermore should be showed the historical evidences which potraied about the VOC Fortress at Jepara. As its result could be conclude that the building of VOC Forttress at Japara has economical, political and military purposes.

This study is meant to deal with the aftermaths of Mount Kelud Eruption from 1919 to 1922 in the region of Blitar, which is focused on the effects of Mount Kelud eruption on the economy and its impacts for the three years following the eruption. The aftermaths of Mount Kelud eruption of 1919 had caused many of the residents lose their livelihood, families and damages to the plantations in the region of Blitar. The damages affecting the plantations made the local economy in the region of Blitar drop. This economic slump certainly impeded the development progress in the Gemeente of Blitar, a Gemeente had been formed in the region of Blitar shortly before that. The extensive environmental devastation, inside the gemeente and the outer parts of the regency's regions forced the regional government of Blitar Regency to allocate aids funds to handle the casualties, make the repairs and constructions of the facilities in the region of Blitar.

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This article discusses the efforts of territorial Consolidation and formation of cultural identity during the reign of Hamengku Buwana I. This article is written using historical method and utilizing primary sources in the form of VOC archives stored in the National Archives of the Republic of Indonesia and Java manuscripts stored in Yogyakarta Sultanate, as well as secondary sources in the form of articles and books. After Giyanti Agreement in 1755, Sultan Hamengku Buwana I attempted to consolidate his territory through negotiation, dispute settlement and law enforcement in order to preserve the sovereignity and territorial integrity of his kingdom. He also developed Ringgit Swargen, Yogyakarta style leather puppets that have different shape from Surakarta style leather puppets developed by Surakarta Sunanate as one of the cultural identity of Yogyakarta Sultanate. Leather puppet show was used to control the areas that were in the territory of the Sultanate of Yogyakarta, as the leather puppet show performed outside the palace must obtain permission from the palace puppet master. The efforts of Sultan Hamengku Buwana I failed, due to the conflict that caused the war destroyed the boundaries and the peace agreement that had been made.