The Kingdom of Britannia was formed in 1801 when the Kingdom of Great Britain invaded and conquered Ireland. This consolidated the rule of the Britannian monarch, allowing him to focus on expanding his domain. He managed to claim much of the African coast as Britannian territory, allowing his forces to plunder the resource rich heartlands, often coming into conflict with Prussian settlers and even French forces at times.
Yet the Britannian navy was vast and powerful, and managed to secure Greenland and parts of what is now known as Canada in the name of their king. The Britannian dominance of the seas forced the rival powers to expand their borders within their own continents, resulting in strained relations with the other European powers, especially the Republic of France and the Prussian Empire.