From royal crosses and revolutionary stripes to stars mapped from the night sky, discover the stories behind the flags of Britain, the United States, Japan, Brazil, and Türkiye.

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Romania and Chad both fly a blue, yellow, and red vertical tricolor. Here is how two countries arrived at nearly the same design—and the tiny detail that separates them.

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Red, white, and blue appear on the flags of France, the United States, the United Kingdom, Russia, and many other countries. Discover why this color combination became one of the most recognizable patterns in the world.

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Can you distinguish Australia from New Zealand or Indonesia from Monaco? Learn the visual clues that separate the country flags most often mistaken for one another.

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Denmark, Sweden, Norway, Finland, and Iceland all use a Nordic cross. Learn where the pattern came from and how to tell these related flags apart.

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Stars can represent states, islands, constellations, unity, or a country’s future. Explore the different stories behind some of the world’s most memorable starry flags.

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