A fact from Feudal fragmentation appeared on Wikipedia's Main Page in the Did you know column on 4 June 2011 (check views). The text of the entry was as follows:
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A possible non-European example would be Japan before Tokugawa; [1], [2], and maybe [3]. Of course there were differences as well.Volunteer Marek (talk) 04:18, 24 May 2011 (UTC)[reply]
There is a sentence about Japan already. Sadly, I wasn't able to find any work that actually describes the process in any significant detail, other than the brief one at WIEM. --Piotr Konieczny aka Prokonsul Piotrus| talk 15:22, 24 May 2011 (UTC)[reply]
Japan after Ieyasu Tokugawa was still fragmented. Japan became really united, similarly as Germany, in 19th century. Tim Ocean (talk) 13:46, 1 March 2020 (UTC)[reply]