(This is a long one, so...)
Me,
@HonestAbe1809,
@pieman97405,
@Miguel Lanius,
@chankljp, and others have always done a fair share of Fallout world building for various regions of the Earth, often the ones with next to nothing about. I know this is a lot, and feel free to do what you want, but anyone who would be up to this, I give thanks to the upmost.
Asia/China and Co.
The Ying Dynasty: American take on the Yuan/Qing dynasty founded by American and Allied forces under General Ridgeway. Capital in Shenyang, rules most of Northen China, and parts of former North Korea along the Yule River. (Chagang Province.)
Yankee Horde: A warlike, brute, yet honorable society descendant of American and Russian forces that fled into Mongolia just after the Great War by General MacAuley, Supreme Commander of United States Army Forces in the Far East and first Khan. Capital in Ulaanbaatar. Controls Mongolia itself, Lake Baikal, and parts of China. (See massive DMZ between Ying and Horde, along between the Ying and PRC.)
Shanghai- A high-tech settlement that's like a combination of New Vegas and Kowloon.
The PRC- The main remnant of the Pre-War People's Republic that hung onto the cult of personality of Cheng so hard it ironically became a theocracy. Capital in Nanchang running along the coastline south of Shanghai and North Kong.
Commonwealth of Hong Kong- A Shi-like faction descended from British personnel working on the helicarrier Pegasus when the bombs dropped. Controls the Pearl River region.
Korea: Remnants of North Korea in Seoul. Now a semi-democratic oligarchy.
Sichuan Republic: A throwback to the early days of the Republic of China rule by the Post-War dynasty, the Eckhart Family. Capital in Chengdu and surrounding areas.
United States of Japan: A American-Japanese mixed state that unlike the Ying, stayed democratic. Capital in Hiroshima which rules most of Southern Japan.
Japanese Shogunate: The remnant of the former Japanese government. Is resentful of the fact that the “liberators” have decided to settle down and occupy part of the country. There are also a bunch of de facto independent warlords calling themselves Daimyo that only give lip service to the Emperor. Main capital in Aizu.
Free State of Niigata: Disputed area between the USJ and the Shogunate which while under permanent martial law, is one of the safest regions of the Wasteland.
Macau: Itself. Uneasy balance of power between Triads ruling as feudal lords and the official government.
Empire of Singapore: Rule by a series of Pirate Queens/Empress with one of the finest fleets in Asia. Malay Peninsula and various other bits.
Far East Republic: Russo-Chinese state. Capital Vladivostok. Khabarovsk Krai.
People's Collective: A somewhat small fortified community in Shaanxi lead by a massive mutated clone of Mao who's been ironically marked for death by the PRC for being evidence against their claims that Cheng was a god-on-earth.
Middle East.
Protectorate of Cyprus: British Remnant that sees a a fusion of British, Greek, and Turkish culture along with Jews, Maronites/Coptics, and Worshipers of Poseidon. Rules Cyprus itself and Syrian coast and part of Lebanon.
Stumme-Kléber Kingdom: Freaco-German State that has embrace the worship of the Egyptian Gods and Pharaonism. Capital of Luxor.
Holy Kingdom of Ethiopia: Gone full on Solomonic dynasty-House of David/Prestor John.
Herodian Kingdom: Headquartered in Bethlehem.
Independent City of Jerusalem.
Caesarea Maritime.
Jericho and the Dead Sea.
Water Barons of Northen Israel.
Ireland. (2209.)
Connacht: The conservative hyper-catholic Ireland.
The Peoples Republic of Cork: A communist/revolutionary flavoured Munster.
Anglicised and classist Leinster.
Weirdly medieval Ulster.
Peaceful Belfast.
The Morrgian: Violent Pagan Death Cults that roam Ireland and parts of England with a vengeance.
Germany and Co.
New Prussia, center around Potsdam. Brandenburg, Mecklenburg-Vorpommern, and parts of Poland.
Absolutist Austrian Empire: Lower Austria, Upper Austria, and border regions of former Czechoslovakia.
Authoritarian Austria: Tyrol.
Saxony.
People's Republic of the Rhine: Stranded Warsaw Pact units trapped in the ruins of West Germany following the Great War. So the government and military are descended from a mix of stranded Slavic peacekeepers, Dutch, Belgian, Freach, and the remnants of whatever German state arose from the collapse of the EC. The strategic resources are collectively owned but it's also a genuinely democratic state.
New Hanseatic League: Controlling a string of port settlements from Holstein to Brittany.
Bavaria.