Vietnamese–Cham conflicts in the 11th century

Target entity: Vietnamese–Cham conflicts in the 11th century
Context triple: [southward expansion of Đại Việt (Nam tiến), startEvent, Vietnamese–Cham conflicts in the 11th century]

• A. Mongol invasion of Vietnam
  The Mongol invasion of Vietnam was a series of 13th-century military campaigns by the Mongol Empire against the Đại Việt kingdom that were ultimately repelled, contributing to the limits of Mongol expansion in Southeast Asia.
• B. Cambodian–Vietnamese War
  The Cambodian–Vietnamese War was a late-1970s conflict in which Vietnam invaded Cambodia, overthrew the Khmer Rouge regime, and installed a new government, leading to prolonged regional instability and international tensions during the Cold War.
• C. Lê–Mạc War
  The Lê–Mạc War was a prolonged 16th-century civil conflict in Vietnam between the restored Lê dynasty and the rival Mạc dynasty that reshaped the country’s political landscape.
• D. Battle of Tapae
  The Battle of Tapae was a key engagement between Roman forces under Emperor Domitian and later Trajan and the Dacians, fought near the Iron Gates of Transylvania and remembered as a crucial step in Rome’s eventual conquest of Dacia.
• E. Battle of Buôn Ma Thuột
  The Battle of Buôn Ma Thuột was a decisive 1975 engagement in Vietnam’s Central Highlands whose outcome triggered the rapid collapse of South Vietnamese defenses and paved the way for the fall of Saigon.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Vietnamese–Cham conflicts in the 11th century
Target entity description: The Vietnamese–Cham conflicts in the 11th century were a series of wars between the Đại Việt kingdom and the Champa polity that marked an early phase of Vietnamese territorial expansion to the south.

• A. Mongol invasion of Vietnam
  The Mongol invasion of Vietnam was a series of 13th-century military campaigns by the Mongol Empire against the Đại Việt kingdom that were ultimately repelled, contributing to the limits of Mongol expansion in Southeast Asia.
• B. Cambodian–Vietnamese War
  The Cambodian–Vietnamese War was a late-1970s conflict in which Vietnam invaded Cambodia, overthrew the Khmer Rouge regime, and installed a new government, leading to prolonged regional instability and international tensions during the Cold War.
• C. Lê–Mạc War
  The Lê–Mạc War was a prolonged 16th-century civil conflict in Vietnam between the restored Lê dynasty and the rival Mạc dynasty that reshaped the country’s political landscape.
• D. Battle of Tapae
  The Battle of Tapae was a key engagement between Roman forces under Emperor Domitian and later Trajan and the Dacians, fought near the Iron Gates of Transylvania and remembered as a crucial step in Rome’s eventual conquest of Dacia.
• E. Battle of Buôn Ma Thuột
  The Battle of Buôn Ma Thuột was a decisive 1975 engagement in Vietnam’s Central Highlands whose outcome triggered the rapid collapse of South Vietnamese defenses and paved the way for the fall of Saigon.
• F. None of above. chosen