”Cheju Island is Japanese land?” ... Canadian textbook contains ”error” = Korean report

It was discovered that a Canadian textbook describes Cheju Island in Korea as "Japanese land." Professor Seo Kyo-yo of Sungshin Women's University in Korea, who is well known as an "anti-Japanese professor,"
Professor Seo Jang-deok said on the 14th, "I learned about this recently through information provided by a Korean student in Canada," and revealed that a textbook published by a Canadian publisher lists Cheju Island as Japanese territory.
The photo was released. "Counter points,
The textbook "Exploring Canadian Issues" describes Cheju Island as Japanese land. The textbook states that Japan was expanding its territory while colonizing Korea.
The situation is explained on a map. Japanese territory in 1890 is shown in green, and Cheju Island is also shown in green.
In 2009, when the US CIA (Central Intelligence Agency) updated the Japanese version of the map, it removed Cheju Island.
The problem was that the color of the Japanese territory was written in Japanese. Professor Seo said, "I will immediately send an email of protest to the publisher and request a correction. Koreans living all over the world are
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