<P> Pedro returned to Rio de Janeiro on 14 September and in the following days the liberals had spread pamphlets (written by Joaquim Gonçalves Ledo) that suggested the idea that the Prince should be acclaimed Constitutional Emperor . On 17 September the President of the Municipal Chamber of Rio de Janeiro, Josė Clemente Pereira, sent to the other Chambers of the country the news that the Acclamation would occur in the anniversary of Pedro on 12 October . </P> <P> The official separation would only occur on 22 September 1822 in a letter written by Pedro to João VI . In it, Pedro still calls himself Prince Regent and his father is considered the King of the independent Brazil . On 12 October 1822, in the Field of Santana (later known as Field of the Acclamation) Prince Pedro was acclaimed Dom Pedro I, Constitutional Emperor and Perpetual Defender of Brazil . It was at the same time the beginning of Pedro's reign and also of the Empire of Brazil . However, the Emperor made it clear that although he accepted the emperorship, if João VI returned to Brazil he would step down from the throne in favor of his father . </P> <P> The reason for the imperial title was that the title of king would symbolically mean a continuation of the Portuguese dynastic tradition and perhaps of the feared absolutism, while the title of emperor derived from popular acclamation as in Ancient Rome or at least reigning through popular sanction as in the case of Napoleon . On 1 December 1822, Pedro I was crowned and consecrated . </P> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (June 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table>

The most unusual thing about how brazil gained independence was that