The Imperial Federation of Gran River is a mammoth, cultured nation, ruled by Emperor Arthur with a fair hand, and remarkable for its digital currency, national health service, and punitive income tax rates. The compassionate, democratic, cheerful population of 9.454 billion Ipeonics are free to do what they want with their own bodies, and vote for whomever they like in elections; if they go into business, however, they are regulated to within an inch of their lives.

The large, liberal, outspoken government juggles the competing demands of Education, Administration, and Industry. It meets to discuss matters of state in the capital city of Arthuropolis. The average income tax rate is 99.4%.

The frighteningly efficient Gaucho economy, worth a remarkable 2,406 trillion pilas a year, is driven entirely by a combination of government and state-owned industry, with private enterprise illegal. The industrial sector is led by the Information Technology industry, with significant contributions from Tourism and Book Publishing. Average income is an amazing 254,596 pilas, and distributed extremely evenly, with practically no difference between the richest and poorest citizens.

Outdoor parties in Arthuropolis are all the rave, frequent fliers are obliged to submit to invasive security procedures by government security, grannies get pulled over for knitting pullovers while driving, and the working classes live and die on the fields of the farming communes. Crime is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. Gran River's national animal is the harpy eagle, which soars majestically through the nation's famously clear skies, and its national religion is Ipeonic imperial cult.

Gran River is ranked 1,239^th in the world and 1^st in Sky Haven for Most Developed, scoring 98.41 on the Human Development Index.