From the Wikipedia page [1]
Kushiro Subprefecture (釧路総合振興局 Kushiro-sōgō-shinkō-kyoku) is a subprefecture of Hokkaido Prefecture, Japan.
History
- November, 1897: Kushiro Subprefecture established.
- August, 1922: Renamed Kushironokuni Subprefecture (釧路国支庁).
- October 20, 1948: Ashoro District transferred to Tokachi Subprefecture.
- April 1, 1957: Name returned to Kushiro Subprefecture.