Klang War

Klang War
Date 1867–1874 Location Selangor Result Raja Abdullah/Tengku Kudin faction victory Beginning of British residency of Selangor Selangor became part of the Federated Malay States in 1895
Belligerents
Raja Abdullah loyalists Pahang Kingdom Hai San Supported by: Sultan of Selangor  United Kingdom (from 1873)	Raja Mahdi loyalists Sumatran groups Ghee Hin Supported by: Local Malay chiefs
Commanders and leaders
Raja Abdullah Raja Ismail Tengku Kudin Mohamed Tahir Yap Ah Loy	Raja Mahadi Raja Mahmud Syed Mashhor Chong Chong †

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Prehistoric Malaysia Paleolithic  Lenggong Valley c. 2.000.0000 BCE  Mansuli Valley 235,000 BCE Mesolithic  Niah cultures 65,000–40,000 BCE Neolithic  Bewah man/woman 16,000 BCE  Perak man/woman 11,000–200 BCE  Neolithic Klang 500 – 200 BCE
Early kingdoms Ancient Kedah <100 BCE Chi Tu 100 BCE–642 CE Langkasuka 100 BCE–1474 CE Gangga Negara c. 100 CE–1025 Pan Pan 424–775 Old Kedah 170–1135 Old Pahang 449–1454 Srivijaya 700s–1025 Majapahit 1300s
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Colonial era Portuguese Malacca 1511–1641 Dutch–Portuguese War 1601–1661 Acehnese conquest of Perak 1620 Dutch Malacca 1641–1824 Pahang Kingdom 1770–1881 Straits Settlements 1786–1946 Siamese invasion of Kedah 1821–1826 Anglo-Dutch Treaty 1824 Burney Treaty 1826 Naning War 1831–1832 Kingdom of Sarawak 1841–1946 Separation of Perlis from Kedah 1843 Crown Colony of Labuan 1848–1946 Pahang Civil War 1857–1863 Larut Wars 1861–1874 Klang War 1867–1874 Pangkor Treaty 1874 Perak War 1875–1876 British Malaya / Borneo 1874–1946 Jementah Civil War 1879 North Borneo 1882–1946 Pahang Uprising 1891–1895 Federated Malay States 1895–1946 Anglo-Siamese Treaty 1909 Unfederated Malay States 1909–1946 Battle of Penang 1914 Kelantan rebellion 1915
World War II Japanese occupation of Malaya / Borneo 1941–1945 Malayan campaign 1941–1942 Bornean Campaign 1941–1942 Battle of Muar 1942 Parit Sulong Massacre 1942 Battle of Singapore 1942 Sook Ching 1942 Syburi 1942 Sandakan Death Marches 1942–1945 Si Rat Malai 1943–1945 Jesselton revolt 1943–1944
Formative era BMA of Malaya/Borneo 1945–1946 Crown Colony of N. Borneo 1946–1963 Crown Colony of Sarawak 1946–1963 Anti-cession movement 1946–1963 Malayan Union 1946–1948 Federation of Malaya 1948–1963 Sungai Siput incident 1948 Malayan Emergency 1948–1960 Batang Kali massacre 1948 Bukit Kepong incident 1950 Baling Talks 1955 Malayan Independence 1957 Singapore Self-governance 1959 ISA 1960 1960–2012 Communist insurgency in Sarawak 1962–1990 North Borneo Self-governance 1963 Konfrontasi 1963–1966 Sarawak Self-governance 1963 Formation of Malaysia 1963 Singapore in Malaysia 1963–1965 ASEAN Declaration 1967 Second communist insurgency 1968–1989 13 May incident 1969 National Operations Council 1969–1971 Declaration of Rukun Negara 1970 New Economic Policy 1971–1990 Peace Agreement of Hat Yai 1989
Barisan Nasional era Federal Territory of KL 1974 1977 Kelantan Emergency 1977 Pedra Branca dispute 1979–2008 South China Sea dispute (Spratly) 1980–present Federal Territory of Labuan 1984 Memali incident 1985 Operation Lalang 1987 Constitutional crisis 1987–1988 Royal Immunity Amendments 1993 Financial crisis 1997–1998 Reformasi Movement 1998–2022 1MDB scandal 2015–present
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The Klang War or Selangor Civil War was a series of conflicts that lasted from 1867 to 1874 in the Malay state of Selangor in the Malay Peninsula (modern-day Malaysia).

It was initially fought between Raja Abdullah, the administrator of the Klang Valley, and Raja Mahdi. It was joined by Tengku Kudin (Tengku Dhiauddin, also spelt Ziauddin), a Kedahan prince, as well as other Malay and Chinese rival factions. The war was eventually won by Tengku Kudin and Abdullah's son, Raja Ismail.