After 1900, what is the best way for Japan and China to form a firm and lasting alliance, comparable to how Britain and France eventually became reliable allies, after centuries of hostility? Feel free to institute this at any point in the century. Note: they should be closer allies to each other than other major powers (so a nationalist victory in China where both states become allies of the US doesn’t count, unless they see each other as more important allies than the US is to either of them).
Subsequently, what is the the likely result of such an alliance?
Subsequently, what is the the likely result of such an alliance?