Tidore remained an independent kingdom, albeit with frequent Dutch interference, until the late eighteenth century. Like Ternate, Tidore allowed the Dutch spice eradication program (
extirpatie) to proceed in its territories. This program, intended to strengthen the Dutch spice monopoly by limiting production to a few places, impoverished Tidore as well as its Ternate neighbour and weakened its control over its periphery. A treaty in 1768 forced Sultan Jamaluddin to cede his rights to East Seram which had been granted Tidore in 1700, which created great anger among the elite. The unrest caused the VOC authorities to depose Jamaluddin in 1779 and to force his successor Patra Alam to conclude a new contract that abrogated the old one from 1667. With this document (1780), Tidore was turned from an ally to a vassal and thus lost its independence. One of the exiled Jamaluddin's sons,
Nuku, reacted to this by
starting a rebellion in 1780, seeking support in the marginal areas of the Tidore realm. The uprising took on violently anti-Dutch features where Islam was an important ideological glue. In this period, Gamrange (incl. Bicoli),
Gebe, and
Numfor were able to increase their influence, with Gebe serving as a base when Nuku assembled a fleet of 300 perahus for plundering raids. Nuku in particular found allies in Halmahera, Seram, and the
Raja Ampat Islands, but also in places that had not been subservient to Tidore, such as the
Kei and
Aru Islands. After several shifts, Nuku allied with the
British,
who were at war with the Dutch after 1795 and were in the process of conquering Dutch colonial possessions. In 1797 he captured Bacan and then Tidore itself, expelling the VOC-backed Sultan Kamaluddin. Nuku was enthroned as Sultan Muhammad al-Mabus Amiruddin. As such he took care to restore the defunct Jailolo sultanate to return to the traditional, pre-European quadripartition of Maluku. In 1801 Ternate was captured by the British and Tidorese after a long siege. However, the
Peace of Amiens in Europe changed the strategic positions in the next year already, since the Dutch were allowed to retake their positions in Maluku. After the death of Nuku in 1805, his brother, Sultan
Zainal Abidin, proved unable to resist the Dutch-Ternatan attacks. Tidore was lost in 1806 and the sultan fled, finally dying in exile in 1810. Tidore was subjected to an increasing implementation of colonial rule in the 19th century. A treaty was signed in 1817 where the sultan and grandees received annual subsidies. Tidore was included in the Residency of Ternate together with Ternate, Bacan, Halmahera, and dependencies. The infamous
hongi expeditions, which had eradicated unauthorized spice trees in Maluku and kept the Papuan lands in subordination, were finally abolished in 1859–1861. The title of sultan lapsed in 1905 and was replaced by a regency. The rights of Tidore in West New Guinea were formally upheld, but the Dutch Residents of Ternate tried to diminish Tidorese's influence in those quarters since it was not considered in the interests of the Papuans. It was only after the outbreak of the
Indonesian revolution that the Dutch authorities allowed a new sultan to be enthroned,
Zainal Abidin Alting (r. 1947–1967). After the gaining of Indonesian independence in 1949, old monarchical institutions were abolished. However, the historical status of the sultan played a certain role in bolstering Indonesian claims to Dutch New Guinea. Thus Zainal Abidin was appointed Governor of
Irian Barat (Papua) during the years 1956–1961, at a time when the region was still under Dutch control. After his governorship, he settled in
Ambon where he died in 1967. No new sultan was appointed. However, with the increasing interest in Indonesia for local tradition after the end of the
Suharto era, some aspects of the sultanate were taken up. Titular sultans have been chosen from among the different royal branches since 1999. ==List of sultans==