Q. Which among the following fulfilled the definition of a “Hermit Kingdom” once upon a time?
Answer: Korea
Notes: A hermit kingdom is a term used to describe a country that is isolated and self-sufficient, and that has little or no interaction with the outside world. The term is often used to refer to the Kingdom of Korea (also known as Joseon) during the Joseon Dynasty (1392-1910), which was known for its policy of sakoku, or "closed country". This policy restricted foreign trade and diplomatic relations with other countries, and it effectively made Korea a hermit kingdom. The term has also been used to refer to other countries that have had similar policies of isolation, such as Japan during the Edo period (1603-1868) and North Korea in modern times.