Not to be confused with "kai-to" (Chinese: 街渡), which is a type of boat were ancient roads in Japan dating from the Edo period. Major examples include the Edo Five Routes, all of which started. Minor examples include sub-routes such as the Hokuriku Kaidō and the Nagasaki Kaidō.Kaidō, however, does not include San'yōdō, San'indō, Nankaidō and Saikaidō, which were part of the even more ancient system of Yamato government called Gokishichidō. These names were used for administrative units, and the roads within these units.
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