Trivia: What country had a plain green flag until 2011?
South Africa
Denmark
Libya
Vietnam
The correct answer is Libya
So why is this answer correct? : After Muammar al-Qaddafi overthrew Egypt’s monarchy, he then changed Libya’s flag to an all-green look. When it flew from 1977 to 2011, it was the only plain-colored flag in the world. The move was meant to symbolize the “Green Revolution” that Qaddafi promised his citizens, a revolution that would bring water and other resources to make the desert fertile. The flag returned to the original striped design when Qaddafi was overthrown in 2011.