A (quite ASB) Munro-styled map about a silly universe I thought of:
BRITANNIA RULES THE SKIES
During the 23rd Century, scientists discovered a method for faster-than-light travel, and it only took a few decades before habitable worlds were fond and colonized. However, conflicts soon erupted in the Colonies, and spread to their homelands on Earth. The Colonial War, or World War 3, lasted about a deade, until only 3 major colonial powers were still standing: the United States, the United Kingdom, with Europe at their feet, and China. An allaince was formed between the US and the UK, leading to a liberal nuse of nuclear arsenal on the Chinese, a damage not yet fully repared a century later.
The ensuing small-scale nuclear winter brought a halt to the war, and statred a short cold war between the British and the Americans, but the peace was broken by a surprise strike on New Your City by the Royal Air Force. The ensuing invasion on the East Coast made the United States crumble, and shortly thereafter, submitting to the United Kingdom. Subsequent changes were made by the British, while the wolrd was essentailly under their dominance: The United Kingdom and the Commonweath, along with the US and later Agentina, merged into the British Empire, and the rest of the world entered a new Commonwealth of Nations.
A century later, the world is prosperous, and generally democratic. The Commonwealth acts like a gigantic European Union of sorts, with many sub-organizations taking more local roles '(not the time to exapnd on everything right now, feel free to ask)
Only one country didn't submit to the Commonwealth, although they are quite friendly with them: the eternally neutral Swiss Confederation, peacefully living surrounded by the URE.