The Holy Empire of Amestris-Britannia is a massive, safe nation, ruled by Aoki vi Britannia - 宇宙の錬金術師 with an even hand, and remarkable for its infamous sell-swords, digital currency, and daily referendums. The hard-working population of 1.641 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 42.8%.

The all-consuming Amestris-Britannian economy, worth 146 trillion Cens a year, is broadly diversified and led by the Information Technology industry, with major contributions from Book Publishing, Uranium Mining, and Basket Weaving. Average income is 89,250 Cens, with the richest citizens earning 9.1 times as much as the poorest.

Droves of former desperados are applying to join the border police, Aoki vi Britannia - 宇宙の錬金術師 has just been declared ruler of Amestris-Britannia in an international press conference, the government has declined to declare any particular religion as its 'official' one, and families waiting for delayed pipe installations hope daily for rain. 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, and its national religion is Freedom of worship.

Amestris-Britannia is ranked 102,586^th in the world and 5,120^th in The North Pacific for Most Extensive Civil Rights, with 47.56 Martin Luther King, Jr. Units.