Kantō — the modern region of Japan that includes Tokyo and surrounding prefectures (e.g., Tokyo, Kanagawa, Chiba).
彼は関東出身で、大学も関東の学校に通っていた。
He is from the Kanto region and attended university in Kanto as well.
関東地方は台風の進路によって影響を受けやすい。
The Kanto region is easily affected by typhoon paths.
東京は関東地方の中心都市だ。
Tokyo is the central city of the Kanto region.
A historical term referring to the eastern half of Japan in older periods (e.g., feudal era); its boundaries may differ from the modern usage.
古文書には関東一帯の支配についての記述があった。
The old documents contained descriptions about the rule of the Kanto area.