Tây Thành province

Tây Thành Province
Trấn Tây Thành (鎮西城) (Vietnamese)
ត្រានតាយថាញ់ (Khmer)
Province of Nguyễn Vietnam
1834–1847

Location of Tây Thành province (dark green) under the Nguyen Dynasty (light green).

Map of Tây Thành province in 1838 under Minh Mạng era (based on the 1860 map)
CapitalNam Vang
Population 
 1840
970,516
Government
  TypeMonarchy under Vietnamese administration
Protector-General 
 1834–1841
Trương Minh Giảng
Monarch of Cambodia 
 1835–1846
Ang Mey
Historical eraNew Imperialism
1834
1840
1847
Preceded by
Succeeded by
Kingdom of Cambodia
Kingdom of Cambodia
Today part ofCambodia

Tây Thành (lit.'Western Fortress') was formerly the 32nd province of Nguyễn Vietnam, encompassing what is now modern-day Cambodia. Its capital was the Cambodian capital of Phnom Penh (known to the Vietnamese as "Nam Vang"). It was a special province with a dual system, consisting of Cambodian monarchs who reigned as puppet rulers while a Vietnamese governor resided in Phnom Penh. The province was finally abolished in 1847 after peace talks between Thailand and Vietnam concluded dual-suzerainty over Cambodia.