The Department of Seine-et-Marne is a gargantuan, safe nation, ruled by Vincent Eblé with an even hand, and notable for its ubiquitous missile silos, compulsory military service, and rampant corporate plagiarism. The hard-working, devout population of 20.383 billion Seine-et-Marnais are highly moralistic and fiercely conservative, in the sense that they tend to believe most things should be outlawed. People who have good jobs and work quietly at them are lauded; others are viewed with suspicion.

The medium-sized, moralistic government juggles the competing demands of Law & Order, Industry, and Defense. It meets to discuss matters of state in the capital city of Melun. Citizens pay a flat income tax of 26.4%.

The powerhouse Seine-et-Marnais economy, worth a remarkable 1,479 trillion francs a year, is broadly diversified and led by the Information Technology industry, with significant contributions from Beef-Based Agriculture, Basket Weaving, and Uranium Mining. State-owned companies are common. Average income is 72,606 francs, with the richest citizens earning 8.0 times as much as the poorest.

Online weather reports are predicting five years of glorious sunshine for Seine-et-Marne, nocturnal light pollution is mostly blue, advert breaks are played at lower volumes to make them easier to ignore, and the housing market has collapsed like an overbaked Brancalandian souffle. Crime, especially youth-related, is totally unknown, thanks to a well-funded police force and progressive social policies in education and welfare. Seine-et-Marne's national animal is the cow and its national religion is Roman Catholicism.

Seine-et-Marne is ranked 73,351^st in the world and 17^th in Department Store for Largest Trout Fishing Sector, scoring 3,810.78 on the Nemo Depletion Efficiency Index.