The United States of Mesozoic is a colossal, socially progressive nation, ruled by President Enzo Semedo with a fair hand, and renowned for its ubiquitous missile silos, keen interest in outer space, and devotion to social welfare. The compassionate, democratic, devout population of 3.228 billion Mesozoicans love a good election, and the government gives them plenty of them. Universities tend to be full of students debating the merits of various civil and political rights, while businesses are tightly regulated and the wealthy viewed with suspicion.

The medium-sized, socially-minded government juggles the competing demands of Education, Administration, and Industry. It meets to discuss matters of state in the capital city of Sherington. The average income tax rate is 75.0%, and even higher for the wealthy.

The frighteningly efficient Mesozoican economy, worth 588 trillion Mesozoican dollars a year, is broadly diversified and led by the Information Technology industry, with major contributions from Tourism, Book Publishing, and Retail. State-owned companies are common. Average income is an impressive 182,439 Mesozoican dollars, and distributed extremely evenly, with little difference between the richest and poorest citizens.

The state considers itself the 'third parent' of every child in the nation, prime commercial land is being swamped with archaeological teams, the Finance Ministry posts hourly updates on where taxpayer money is spent, and most barbers are also surgeons. Crime, especially youth-related, is totally unknown, thanks to a well-funded police force and progressive social policies in education and welfare. Mesozoic's national animal is the white-tailed eagle, which soars majestically through the nation's famously clear skies.

Mesozoic is ranked 101,232^nd in the world and 12^th in North America for Largest Insurance Industry, scoring 2,045.79 on the Risk Expulsion Effectiveness Rating.