Bay of Plenty region was formed in 1989 after a nationwide review and shakeup of top-level local government in New Zealand. The new region incorporated the former counties of Tauranga, Rotorua, Whakatane and Opotiki. On 5 October 2011, the MV Rena ran aground on the Astrolabe Reef in the bay causing a large oil spill, described as New Zealand's worst ever environmental disaster. The region is subdivided into territorial authorities, which include the Western Bay of Plenty District, Tauranga City, Whakatane District, Kawerau District and Opotiki District, as well as parts of Rotorua District and the town of Rangitaiki in Taupo District. The
Bay of Plenty Fulloon were killed by local Māori at Opotiki and Whakatane, respectively. The ensuing conflict resulted in the confiscation of considerable land from several Bay of Plenty iwi by the government. Confiscation of Māori land deprived local iwi of economic resources (among other things), and also provided land for expanding European settlement. The government established fortified positions, including at Tauranga, Whakatane and Opotiki. European settlers arrived throughout the latter half of the 19th century, establishing settlements in Katikati, Te Puke and the Rangitaiki area. In 1876, settlements were incorporated into counties following the nationwide dissolution of the provincial system. Initial settlements