Cambodia

Cambodia or Kampuchea was a country in Asia.

History
The Tenth Doctor took Heather McCrimmon and Wolfgang Ryter to Cambodia in 1139. (COMIC: Bad Wolfie)

Danny Taylor and his friend Kurt Williams took a year off in 1997 after graduating high school to travel. They planned to finance this by writing a backpacker's guide to Cambodia. (PROSE: Bullet Time)

Jean and Harry visited Cambodia prior to 2009. (COMIC: The Widow's Curse)

Marillian tracked the Ark of the Covenant to Kampuchea in 2577. (PROSE: The Sword of Forever)

Cambodia had suffered in the Unbound Universe between the 1970s and 1997, the Master sarcastically asking the Doctor if he planned to travel back in time and help the Cambodians instead of just helping "the little people". (AUDIO: Sympathy for the Devil)