Vanuatu

Feb 13, 1980 | Country flag, Merchant flag, State ensign, State flag, War flag |

...

Equatorial Guinea

Aug 21, 1979 | Country flag, Merchant flag, Naval flag, State ensign, State flag, War flag |

...

Spain

Dec 6, 1978 | Country flag, Merchant flag, Naval flag, State flag, War flag |

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Dominica

Nov 3, 1978 | Country flag, Merchant flag, Naval flag, State ensign, State flag, War flag |

...

Libyan Arab Jamahiriya 1977-2011

Nov 11, 1977 | Country flag, Histroical flag, Merchant flag, Special, State flag, War flag |

Only national flag in the world consisting of only one color without further...