The Victorian Silurian World of Madame Vastra is a gargantuan, environmentally stunning nation, remarkable for its absence of drug laws and spontaneously combusting cars. The hard-nosed, hard-working, democratic population of 17.551 billion Silurians live in a state of perpetual fear, as a complete breakdown of social order has led to the rise of order through biker gangs.

The large, liberal, pro-business, outspoken government juggles the competing demands of Spirituality, Social Policy, and Law & Order. Citizens pay a flat income tax of 30.3%.

The strong Silurian economy, worth 684 trillion Pounds a year, is quite specialized and led by the Beef-Based Agriculture industry, with major contributions from Pizza Delivery, Furniture Restoration, and Information Technology. Black market activity is notable. Average income is 38,974 Pounds, but there is a vast disparity between incomes, with the richest 10% of citizens earning 377,883 per year while the poor average 193, a ratio of 1,948 to 1.

Crime is a serious problem. Madame Vastra's national animal is the Shadow, which frolics freely in the nation's many lush forests.

Madame Vastra is ranked 11,054^th in the world and 267^th in Europeia for Most Influential, scoring 3,336 on the Soft Power Disbursement Rating.