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Nonfiction and Biography : The Man Who Made a Map Around the Earth He was born as the son of a fisherman. He lost his mother when he was a child and devoted himself to learning arithmetic. After he married into the Ino family in Sawara, Chiba Prefecture, he showed his spirit of inquiry and business ability and became a person who was also relied on as a village headman, for example, restoring a famous family that had been ruined. After his retirement, Tadataka, who spent the day as a family business, and at night as a student of the calendar study and astronomy, decided to go to Edo to study seriously. He was 50 years old at that time. He studied under TAKAHASHI Yoshitoki, the Tenmonkata (astronomer) of the Shogunate, and studied more enthusiastically than any of his students. At the age of 55, Tadataka decided to go on a survey trip to make a map. He overcame many difficult journeys and traveled around the world to survey the map. What was the life of the man who made an exquisite map of Japan for the first time with the technology of the time? [Recommendation from editor] Tadataka Ino who, despite being old, had a magnificent dream, challenged, and accomplished it. What was the life of the man who made an exquisite map of Japan for the first time with his voracious curiosity and solid technology? You can read the life of great people who always learn at school easily, easily read, and enjoy!