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Japan Through Time
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Gunma
群馬県
Gunma
8 events
Ancient
4th–6th centuries
Large kofun express elite power in ancient Kozuke
early 6th century deposition; object type late 5th–mid 6th centuries
A horse ornament is preserved in early-sixth-century volcanic deposits at Kanai Higashiura
Across periods
Edo–Meiji periods
Sericulture expands as a major rural industry
Modern
1870s–1880s
Women workers operate and transmit skills at Tomioka Silk Mill
1872
Tomioka Silk Mill begins operations
Contemporary
1946–1949
Iwajuku finds and excavations establish a Japanese Paleolithic record
1950s–1980s
Transport investment and factory attraction reshape Gunma
2014
Tomioka Silk Mill and Related Sites enter the World Heritage List
Nearby
Fukushima
Tochigi
Saitama
Nagano
Niigata