The Holy Empire of Amestris-Britannia is a massive, efficient nation, notable for its digital currency, infamous sell-swords, and daily referendums. The hard-nosed, hard-working population of 1.163 billion Amestris-Britannians have some civil rights, but not too many, enjoy the freedom to spend their money however they like, to a point, and take part in free and open elections, although not too often.

The medium-sized government juggles the competing demands of Education, Industry, and Healthcare. It meets to discuss matters of state in the capital city of Amestris. Citizens pay a flat income tax of 42.6%.

The all-consuming Amestris-Britannian economy, worth 100 trillion Cens a year, is broadly diversified and led by the Information Technology industry, with significant contributions from Book Publishing, Uranium Mining, and Basket Weaving. Average income is 86,209 Cens, with the richest citizens earning 9.1 times as much as the poorest.

Antique comic book collectors are disappointed to hear that their treasures are worth exactly as little as their mothers said they were, government crews work tirelessly to retake the suburbs from organized packs of raccoons, Jennifer Government is a bestseller, and party affiliation is just as irrelevant as campaign promises. Crime is totally unknown, thanks to a capable police force and progressive social policies in education and welfare. Amestris-Britannia's national animal is the Rat, which frolics freely in the nation's many lush forests.

Amestris-Britannia is ranked 31,661^st in the world and 1,488^th in The North Pacific for Most Eco-Friendly Governments, scoring 2,012.88 on the Dolphin Recycling Awareness Index.