Bombyx mori silkworms for the production of raw silk, has been under way for at least 5,000 years in China, from where it spread to India, Korea, Japan, and the West. The silkworm was domesticated from the wild silkmoth "Bombyx mandarina", which has a range from northern India to northern China, Korea, Japan, and the far eastern regions of Russia. The domesticated silkworm derives from Chinese rather than Japanese or Korean stock. Silkworms were unlikely to have been domestically bred before the Neolithic age. Before then, the tools to manufacture quantities of silk thread had not been developed. The domesticated "B. mori"
Mori, Hokkaido schools: Mori Middle School and Sawara Middle School. The town is home to six elementary schools. There are several empty elementary school buildings due to the declining population of Mori Machi. The most recent closings being Ishikura elementary school in 2017 and Akaigawa elementary school in 2011. The town of Mori is served by four post offices. The main post office is in the Miyukichō district, in close proximity to the Mori Town Hall. Keizō Kajiya (b. 1956), a graduate of Ashikaga Institute of Technology and mayor of the former town of Sawara, was elected mayor of Mori on October