Only nation in the world to have a plane national flag (one colour, no symbols)?

Keep practicing — related questions

• name the country with a green flag.
• Identify the flag ….
• NAME THE COUNTRY WHICH HAS A SINGLE COLOUR IN ITS FLAG?
• Which country's flag has just one colour? Consider White as a colour.
• the flag of which country is a single colour?
• ______ is the only country with single coloured flag?
• Which nation is the only one in the world to incorporate a building in its flag design?
• Identify the flag ….