And now for something completely different...
Wamapu is a moon orbiting a brilliantly coloured gas giant, possessing a breathable atmosphere and gravity below even a Mars norm. Whilst these are habitable conditions for humans there are very few landmasses above sea level. The largest of these is the main centre of human settlement on the moon, and home to its major city of Ralma Mapu. Ralma Mapu is easily the largest single city of this solar system, and one with an interstellar reputation for high quality crafts. The planet attracts considerably more offworld traffic than one might otherwise assume from a moon of this physical size, especially given that it has a population of less than four million people.
The first migrants to this world were part of the Mapuche of Chile and Argentina, part of a wider pattern of South American indigenous peoples forming offworld communities across the 22nd-23rd centuries. This was not an easy decision for many such societies, and this was the case for the Mapuche. The majority of the Mapuche peoples elected to remain on Earth, though it's estimated over a hundred thousand Mapuche migrated to Wamapu between 2159-2248 CE. The vast majority of current Wamape citizens continue to identify themselves as Mapuche, and when they need to be distinguished from Mapuche peoples of Earth they are often called Wamape Mapuche, with Wamape being used to describe the overall population of the moon as a whole.
Wamapu shares a star system with Qualambvar, founded by the Qom (also an indigenous people of South America). The two planets have always co-ordinated interstellar policy to a strong degree, and in the emergency of the Interregnum this led to a formal union of the two worlds. This union has lasted past those trying circumstances and remains active in the present day. As a result both planets are active in their relative interstellar region, with Wamapu's cultural and economic impact gaining in strength over the centuries. The moon's oceans are currently being surveyed by explorers from the starship Lahiwaka, and Wamapu is undergoing a period of intense cultural exchange with the Polynesians of the Stars that crew and live on that mighty vessel.