North Borneo Federation

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Federation of North Borneo Kesatuan Kalimantan Utara (Malay)
Flag
The territory of the proposed federation
Status	Proposed federation states
Capital	Brunei Town (de facto)
Recognised regional languages	Malay
Religion	Sunni Islam
Membership	Brunei Sarawak North Borneo
Government	Constitutional monarchy
• Sultan	Omar Ali Saifuddin III
• Prime Minister	A.M. Azahari
Historical era	Brunei revolt
• Established	1961
• Disestablished	1962
Currency	Malayan dollar

Part of the Formation of Malaysia
Events
Malaysia Bill Cobbold Commission  • 18-point agreement  • 20-point agreement Singaporean referendum Sarawak communist insurgency Piracy in the Sulu and Celebes Seas  • Cross border attacks in Sabah  • Moro conflict Brunei revolt  • North Borneo Federation Konfrontasi Manila Accord Maphilindo Sarawak Self-governance Malaysia Act 1963 North Borneo Self-governance Proclamation of Malaysia Operation Claret 1964 race riots in Singapore MacDonald House bombing PAP–UMNO relations Proclamation of Singapore UN Security Council Resolution 213 Singapore Agreement South Thailand insurgency Double Six Tragedy Pedra Branca dispute 2019 failed constitutional amendment 2021 constitutional amendment
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The North Borneo Federation, also known as North Kalimantan (Malay: Negara Kesatuan Kalimantan Utara, lit. 'Unitary State of North Kalimantan'), was a proposed political entity which would have comprised the British colonies of Sarawak, British North Borneo (now known as the Malaysian state of Sabah) and the protectorate of Brunei.