Was Cambodia renamed after gaining independence

No, Cambodia was not renamed after gaining independence. Cambodia gained independence from France in 1953 and has retained its original name since then.

Which colonizer gave independence to Cambodia and who was the prime Minister/president of the colonizer at that time

Cambodia gained independence from France in 1953. At that time, the Prime Minister of France was Joseph Laniel, and the King of Cambodia, Norodom Sihanouk, negotiated with the French government for Cambodia's independence.

Who was the Nationalist leader and what was the political party

The nationalist leader of Cambodia at the time of independence was Norodom Sihanouk. He was a key figure in the independence movement and served as both King and Prime Minister of Cambodia. The political party associated with Sihanouk was the Sangkum Reastr Niyum (People's Socialist Community), which he founded in 1955.

When did it gain Independence?

What ways did it achieve independence: arm-resustance, negotiations, external pressure or colonial power wish to leave?

Cambodia gained independence from France on November 9, 1953. The country achieved independence through a combination of negotiations and external pressure. King Norodom Sihanouk played a key role in the negotiations with the French government, and there were also growing nationalist movements and pressures for decolonization in the region. The French government, under pressure from the United Nations and other international actors, ultimately agreed to grant Cambodia independence through the Franco-Cambodian Treaty signed in 1953. While there were some nationalist movements and calls for armed resistance in Cambodia, particularly in the decades leading up to independence, it was ultimately through peaceful negotiations that Cambodia achieved independence from France.