Your challenge, if you accept it, is to have at least five completely westernised countries (excluding Japan) in Asia by year 1900. They must have modern administration, military and must be industrialised at least to Japan's level by 1900.
Rules:
1) They should be fully sovereign I.e. not protectorates or aligned states.
2) they should be Great power rank or at least be able to stand up to them.
(Btw this is my first post. Hello everyone!)