Which country had a single-coloured flag?
Mauritania
Libya
Saudi Arabia
There was no unicolor flag
The flag of the Libyan Arab Jamahiriya was adopted on 11 November 1977 and consisted of a green field. It was the only national flag in the world with just one color and no design, insignia, or other details. It was changed in 2011.
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Answers by country
Mauritania
Libya
Saudi Arabia
There was no unicolor flag
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Italy
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