1. Anglican Union
2. Greater Switzerland
3. Russia
4. Balkan Federation
5. United African Republic
6. India, northwest ("Hindia")
7. India, south ("Dravindia")
8. India, northeast ("Benglia")
9. Central Asian Federation ("Iranistan")
10. Austronesian Federation
11. Brazil
12. Andean Union
13. Mexico
14. United Arab Republic
16. North China
17. South China
Not including Korea, Japan, and Madagascar as the three next largest nations in order of population.
POD was 1914, when Princip shot and wounded the Heir to the throne of Austria-Hungary, and shot and killed his wife. When the investigation was complete the entire Austrian-Hungarian monarchial system was discredited, leaving a furious Heir and five very photogenic orphans.
After the apocalyptic fit and death of his father, the new Kaiser and Koenig Franz Ferdinand got his children acknowledged as the heirs to the throne. When his eldest son married a Croatian and his eldest daughter a Romanian, the possibility of Federation was in the air. By 1925 it was in the voting booths and then a reality. Austria became part of the German Reich with his youngest daughter's fairytale elopement and marriage to the nephew of the new Kaiser and it's incorporation as a kingdom to solve the knotty political problems of Austrian pretentions to Balkan leadership.
The collapse of agricultural exports after the application of nitrogen fixing technology to the natural gas supergiant Netherlands Groeningen field and the loss of income from grain exports of Russia, Argentina, American, Australia, and Canada, caused the great deflation and it's economic reorganisation and debt defaults, and the bankruptcy of Britain. What was the point of keeping an unwilling Ireland in the United Kingdom when it's agricultural exports were worthless? When so many countries had abandoned the gold standard for lack of gold, and the palm oil margerines for cheap butter, what was the point of South Africa and other colonies?
The vicious Japanese ethnic cleansing of the nonTaiwanese Chinese from Taiwan and the settlement of the Japanese on the stolen farmlands did nothing to help the collapsing agricultural economies of rural Japan. The boycott of Japanese industrial production eventually brought about the coup of 1930 and the Japanese civil war, and the withdrawal of all the troops from the Korean and Taiwanese colonies to join the fight at home. When the British and other European powers enforced the truce in the civil war, the ethnic Japanese were sent home from both.
The Taiwan colony did not get independence like the Korean one, but was used as a dumping ground for the ethnic Chinese of Indonesia, Indochina, Thailand, and the Phillipines as the European colonists removed the inconvenient competition. The evolution of Taiwan into the center of Austronesian Enlightenment was inevitable.
The horrors of the Japanese civil war no sooner ending, then the Chinese civil war broke out. This time the European powers were helpless to end the fighting and the war lasted ten years and killed one hundred million people, the Taiping rebellion of the 1860's paled into insignificance as the famines wreaked havoc.
It was the Austronesian intervention on the side of the North Chinese that finally broke the power of the South Chinese Communists and, incidentally, incorporated Yunan and Hainan into the Austronesian Union. The border is still fortified, and relations are the tensest on the north and south border of South China of any in the world.
India's devolution was peacefull in contrast, not least because of the widespread revulsion spread by the televised scenes of massacre and starvation. The oath of peace taken at New Delhi was honored for more than practical reasons of business.