Champa or Tsiompa (Cham: Campa; Vietnamese: Chăm Pa) was a collection of independent Cham polities that extended across the coast of what is today central and southern Vietnam from approximately the 2nd century AD until 1832 when it was annexed by the Vietnamese Empire under Minh Mạng.[1] The kingdom was known variously as nagara Campa (Sanskrit: नगरः चम्पः; Khmer: ចាម្ប៉ា) in the Chamic and Cambodian inscriptions, Chăm Pa in Vietnamese (Chiêm Thành in Sino-Vietnamese vocabulary) and 占城 (Zhànchéng) in Chinese records.

The Chams of modern Vietnam and Cambodia are the remnants of this former kingdom. They speak Chamic languages, a subfamily of Malayo-Polynesian closely related to the Malayic and Bali–Sasak languages.

Government: Monarchy
Common languages: Chamic languages, Sanskrit, Old Malay

Source : Wikipedia