1970 Cambodian coup d'état

The 1970 Cambodian coup d'état (Khmer: រដ្ឋប្រហារឆ្នាំ១៩៧០, French: Coup d'État de 1970) was the removal of the Cambodian Chief of State, Prince Norodom Sihanouk, after a vote in the National Assembly on 18 March 1970. Emergency powers were subsequently invoked by the Prime Minister Lon Nol, who became effective head of state, and led ultimately to the removal of Queen Sisowath Kossamak and the proclamation of the Khmer Republic later that year.

Source: Wikipedia — 1970 Cambodian coup d'état (CC BY-SA 4.0)