During the Napoleonic wars, the entire Portuguese court relocated to Rio de Janiro which became the new capital. https://en.wikipedia.org/wiki/Transfer_of_the_P

During the Napoleonic wars, the entire Portuguese court relocated to Rio de Janiro which became the new capital. https://en.wikipedia.org/wiki/Transfer_of_the_Portuguese_court_to_Brazil https://en.wikipedia.org/wiki/Transfer_of_the_Portuguese_cou...