>An international superpower that possesses about one-third of the entire world. The Britannia royal family starts from a Celtic king who resisted Julius Caesar’s invasion of Britannia, which leads to the creation of Britannia Empire. This divergence in history causes many other differences: the retaining of absolute monarchy, the suppression of the American colonies' rebellion in 1776 and the conquering of the American continents. Its calendar is "Ascension Throne Britannia", or A.T.B. It remains in expansion, with the recent invasion and colonization of Area 18. Britannia invades Japan to obtain a newly discovered energy source, the Sakuradite.