<prompt> Translate the following text to SwahiliJapan has never experienced the kind of large-scale immigration or even until the postwar US occupation from 1945 to 1952 foreign invasion that has made for social conflict in other countries.  <response>: Japan haijawahi kukutana na aina ya uhamiaji mkubwa au hata hadi baada ya vita ya Marekani kutoka 1945 hadi 1952 uvamizi wa kigeni ambao umesababisha mgogoro wa kijamii katika nchi nyingine. 