>>31448348Sorry for butting in after just saying I'd let you two figure things out, but I do have some relevant knowledge here. The IRL Tokugawa Shogunate actually actively encouraged the isolation of individual communities by outright forbidding daimyo from interacting directly with one another without going through the Shogunate.If you're interested in doing your own research, this might be a useful resource:
https://datascience.iq.harvard.edu/files/pegroup/files/constraining_the_samurai_9.15.pdfAnd if you have a .edu email, this one as well:
https://www.jstor.org/stable/132613 