The national flag of Brazil is a blue disc depicting a starry sky spanned by a curved band inscribed with the national motto, within a yellow rhombus, on a green field. Brazil officially adopted this design for its national flag on November 19, 1889.
The green and yellow colors representing the Braganza-Habsburg dynasty. The stars, whose position in the flag reflect the sky over Rio de Janeiro on November 15, 1889, represent the union's federated units – each star representing a specific state. The motto "Ordem e Progresso" ("Order and Progress") is inspired by Auguste Comte's motto of positivism. (source)
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