3 How much do you know about countries of the world

Which country in eastern Europe was formerly known as White Russia?

Which country did the communist movement, Khmer Rouge, rule?

In which country are the aflāj, an ancient system of water channels that have been designated a UNESCO World Heritage site, found?

Which country was formerly known as French Somaliland and the French Territory of the Afars and Issas?

Which African country is known as the "land of a thousand hills"?