Euclid is a habitable planet within the Via Sagittaria Galaxy. The planet is fair away from homeworlds of major species, in fact, it is the farthest habitable planet from any capital or home world still in the Via Sagittaria. Located on the edge of the galactic disk, Euclid is only accessible via Wormhole or newer forms of FTL such as SICTIRIAD Generators. Such a far-off planet was colonized solely to be the seat of the High Court of Via Sagittaria, the highest body within the Confederacy of Borealis for the interpretation of the law as well as well as the ability to here challenges to laws which defy the statutes of the Treaty of Albedo, the founding document of the Confederacy that acts as a constitution for the nation.
Euclid formed half a billion years ago around a small yellow K class star. It formed a small ring system after tearing apart an asteroid almost one million years ago. The planet gained almost all of it's five small asteroid moons recently, in approximately 167,000 BCE.
The planet was never colonized in it's history. The first time it was discovered was when a several millennia-old probe stumbled across the world on it's mission to catalog the galaxy. The probe was from the Yohjan Confederacy, but the nation had long-since collapsed by the time the planet was catalogued. Regardless, the probe followed it's program and placed a marker on the planet claiming it for the federal government.
Another five centuries later, when the Confederacy of Borealis was looking for a planet to be it's Judicial capital, it wanted to make sure it was far from the influence of any one nation. Rather than look for new planets, they decided to follow the markers left by the previous government. They found dozens of candidates, none quite as far as Euclid. They constructed a wormhole to the planet and the first colonists stepped foot on the world in 22009. These colonists were tasked with building infrastructure for the High Court to use. When construction was finished in 22041, the Justices appointed from each nation were moved to the world.
It has been fairly quiet on Euclid since it's initial colonization. It has no strategic value and resides in an empty part of the galaxy, making it entirely untouched throughout history. The current population is 50 million individuals, almost all of which work on the world for the sake of the justices themselves or as aids.
The most notable location on the planet is the High Court Building. This structure has room for over one hundred representatives, but only 27 nations qualify to send justices to this area. These justices only handle the most important of quadrillions of cases taking place every year, regional courts handle most other things. As such, the planet is fairly unknown for being a capital of the CoB. Most individuals do not care to remember the planet when it is not nearly as important as other capitals such as Thalsiedeln or Jormungandr.
Other locations include a large hall, almost one kilometer long, displaying every past justice that had ever served on the court. These statues are spaced three meters apart, one on each side of the ten meter wide hallway. They are built on a one to one scale, larger species are often given extra room in this hall. This hall is one of the most visited tourist attractions on the planet, however, less than one million (which is far less than a rounding error compared to the total number of tourist activity in the galaxy), individuals see the hallway per year.
The planet, being so isolated and with such a small population for a capital world has developed a fairly unique culture. Many individuals currently living on the planet were born there. In fact, only about a per mille of individuals living on the planet were not born there.
The people of Euclid are generally fairly xenophobic. Despite being one of the most diverse worlds in the CoB, outsiders are often ostracized for a while before being accepted. The obvious exception being the Justices, being the life blood of the planet as they are. They prefer self-governance and have their own government that only answers directly to the court, meaning that a decent number of the cases they recieve are from Euclid itself (although these do get a lower priority than the other cases). The Euclideans, as they are called, are fairly spread out over their planet. With not much surface-area taken up by seas, the average person lives in an area with a population density of only 12 per square kilometer. Large tracts of the planet are entirely empty, with no infrastructure or people to speak of. These areas are devoted to wildlife preserves for species from across the galaxy (modified to form a stable ecosystem).