Rio de Janeiro

Grande Rio, or the Greater Rio de Janeiro, is a large coastal metroplex located in the Earth nation of Brazil on the South American continent. One of the first Cabraline-era colonial settlements, Rio de Janeiro grew from the mouth of the Guanabara Bay in 1565 to incorporate the entire interior shore by the early-22nd century including neighboring cities and communities. Surrounded by tropical mountains, Rio's geography and farmland premiums capped population growth below fifty million even before the Domus Diaspora population collapse and since remained low despite a high population density compared to other Earth megacities.