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From what I read that the Portuguese were sending missions to the Japanese since 1540's and the Muslims had already converted up to Aparri in the Philippines in 1570's but not inland.
What would be the effects of a no Spanish Philippines on Japan and the other Asian countries, since the Muslims on the Philippines would continue to interact with the Wukou or the Japanese pirates..would there be a muslim expansion to Japan or Ryukyu or there would be more Hui in Taiwan and Ryukyu?