Doubtless there was some sort of cultivation: starchy yams and taro, likely originating within the continent, were being elevated, the starch from them formed right into a sort of bread. This incipient agriculture seems related to a cultural florescence in mid-Jōmon times that lasted about one,000 decades. Encyclopaedia Britannica's editors https://bangkokwax83704.blogars.com/28211892/helping-the-others-realize-the-advantages-of-shokupan-bread