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So, I need some help with a worldwide ATL from 1270-1290. Basically, I need to know how to make a complete Mongol takeover of Korea possible, along with moving that darned typhoon off-course so they can attack Japan. In Europe, I need to know how realistic a matriarchal Byzantine Empire would be, and I need Pope Urban II killed before the Crusades can be announced. Britain becomes isolationist ITTL and never goes to war with France or anything like that. France is dissolved under a failed Capet regime, and Spain fails epically at any sort of Reconquista. The Kievan Rus hold off the Mongols, only to be conquered by the HRE. For Africa, I need the Almohads to rival European powers, and I need Ethiopia going to colonize Madagascar and the southern parts of Africa, but being met with fierce resistance by smaller states, including a much earlier Zulu state. Meanwhile, back in China, the Yuan Dynasty has just begun, and now prepares to invade Europe. Vietnam becomes a regional power, conquering India. In the Americas, I need to know how to make the Tepanecs beat the Aztecs, and the Tiwanaku must destroy the very first Incas. I want Mali colonizing the Americas, and competing with Great Zimbabwe. In the north, a surviving Mississippian culture fights against the Norse settlers for control of the eastern coast. So, my question is... how do I pull this all off?
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