Flag of Brazil depicts motto
The national flag of Brazil (Portuguese: bandeira do Brasil), is a blue disc depicting a starry sky (which includes the Southern Cross) spanned by a curved band inscribed with the national motto "Ordem e Progresso" ("Order and Progress"), within a yellow rhombus, on a green field. It was officially adopted on 19 November 1889 — four days after the Proclamation of the Republic, to replace the flag of the Empire of Brazil. The concept was the work of Raimundo Teixeira Mendes, with the collaboration of Miguel Lemos, Manuel Pereira Reis and Décio Villares.
The green field and yellow rhombus from the previous imperial flag were preserved (though slightly modified in hue and shape). In the imperial flag, the green represented the House of Braganza of Pedro I, the first Emperor of Brazil, while the yellow represented the House of Habsburg of his wife, Empress Maria Leopoldina. A blue circle with white five-pointed stars replaced the arms of the Empire of Brazil — its position in the flag reflects the sky over the city of Rio de Janeiro on 15 November 1889. The motto Ordem e Progresso is derived from Auguste Comte's motto of positivism: "L'amour pour principe et l'ordre pour base; le progrès pour but" ("Love as a principle and order as the basis; progress as the goal").Each star, corresponding to a Brazilian Federal Unit, is sized in proportion relative to its geographic size, and, according to Brazilian Law, the flag must be updated in case of creation or extinction of a state. At the time the flag was first adopted in 1889, it had 21 stars. It then received one more star in 1960 (representing the state of Guanabara), then another in 1968 (representing Acre), and finally four more stars in 1992 (representing Amapá, Roraima,  and  Tocantins), totalling 27 stars in its current version.Fonseca suggested that the flag of the new republic should resemble the old imperial flag. This was intended to underscore continuity of national unity during the transition from a constitutional monarchy to a republic. Raimundo Teixeira Mendes presented a project in which the imperial coat of arms was replaced by a blue celestial globe and the positivist motto. It was presented to Fonseca, who promptly accepted. The flag was designed by a group formed by Raimundo Teixeira Mendes, Miguel Lemos, Manuel Pereira Reis and Décio Villares. It was officially adopted on 19 November 1889.The flag has been modified on three occasions to add additional stars intended to reflect newly created states: 1960 (22 stars), 1968 (23 stars) and 1992 (27 stars). In contrast to many other national flags with elements representing political subdivisions, modifications to the flag of Brazil were not always made promptly upon political reorganisation, resulting in multi-year periods of history where there was a mismatch between the number of stars and the number of states and federal districts. The most recent modification was made on 11 May 1992, with the addition of four stars to the celestial globe (representing states created between 1982 and 1991), and a slight change in the stars' positions was made to match the astronomical coordinates correctly.
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