Explored initially by Jesuit colonists in 2198, their ship experienced a catastrophic failure, and they crashed down on the system's only moon: Claudius I. From the crashed vessel, the human race gradually spread across the face of Claudius I.
"...Frankly, I'm shocked we didn't blow a hole right through the damn thing..."
Ret. Adm. Saul Santosi, remarking on the bombardment of Claudius I in 2276.
First discovered in 2089, Claudius I was settled in 2198 by Jesuit colonists and researchers after the destruction of their vessel by a meteor shower. Claudius I's first settlement was called Cuenca Verde, which continues to be the planet's capitol and most populated cities. After several Arachnid incursions onto the planet, the denizens of Claudius I, numbering in the tens of thousands at this point (2232), reached out to the Federation for assistance. Following a counterattack by the Mobile Infantry, Claudius I joined the ranks of the United Citizens' Federation, and pledged allegiance to its ideals. Newly opened channels for immigration within the Federation swelled the population of the planet, with major civic centers emerging by the mid-forties to compensate for ambitious construction projects and job opportunities all over the planet.
Since the initiation of relations between Claudius I and the Federation, the Arachnids have posed a threat to the planet's population. Limited to brief, relatively small encounters contained within the planet's rural regions throughout the years. It wasn't until 2286 when St. Christopher was destroyed did a large scale invasion occur. The Arachnids' offensive overwhelmed the Mobile Infantry stationed on Claudius I, netting heavy casualties among the human populace of the planet. 23,000 were killed before the planet was fully evacuated, along with thousands more missing. Despite receiving reinforcements from the nearby Castus system, the Mobile Infantry on Claudius I were forced to withdraw. Analysis of the Arachnid numbers on Claudius were grim, with Games and Theory discerning battlefield projections to amount to pyrrhic victories at best. It was decided that the Arachnid infested areas of the planet were to be saturation bombed from orbit, which troubled the planet's diaspora, the majority of whom lived in areas compromised the most heavily by Arachnids. Following the bombing, the Mobile Infantry garrisoned at Claudius I have encountered Arachnids, but these incursions have been able to be contained and quickly dispatched.
"I understand the necessity to wipe those freaks off the map- I really do. It's just hard when it's your home, and your memories that happen to be in the blast radius."
Ret. Lt. Jerry Herzog, mayor of Cuenca Verde.
The saturation bombing of Claudius I destroyed decades of infrastructure, but it paved the way for a military success for the Federation. An offensive was mounted following the bombardment, and the planet was fully expunged of Arachnids with significantly less MI and Fleet casualties than initially projected. With over 125,000 tonnes of ordnance used, the years to follow for the returning refugees were spent rebuilding from what remained. The coming decades brought about an economic depression, as millions left Claudius I to pursue more fruitful avenues of making a living. In 2291, the planet was on the verge of bankruptcy, and began to rely heavily on subsidized resettlement and reconstruction services offered by the Federation. Today, the economy is marginally better off, with the scars of the Battle of Claudius I still gouged into the planet, left to rot in the wake of bombardment. The majority of the population has relocated to the few civic centers that were left relatively untouched during the initial Arachnid invasion.
Rooted in Jesuit teachings, the initial population of Cuenca Verde maintained their faith, and encouraged scientific pursuits among their progeny. Foreigners were allowed to travel unmolested, and to join their settlement if they pleased. The population gradually grew, with a quilt work of families from all over the galaxy, united on Claudius I for one reason or another, maintaining a tightly-knit community. The denizens of Claudius I, although being a religious settlement in nature, tolerated the presence of other faiths on the planet. Mormon settlers were granted plots of land, along with diaspora from conflicts across the galaxy left with few alternatives of relocating themselves.
Following the planet's induction into the Federation, the planet's culture and society were rapidly globalized by incoming droves of people from all over the Federation, eager to resettle themselves. Like Terran culture, social conventions, societal expectations, and beliefs differ where you are, as many groups from different creeds have come to call Claudius I their home over the years.
After the bombing, several cultural centers were completely destroyed; most not being repaired or restored due to the mass exodus of the planet's population following the evacuation.