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| | koku |
 | | A koku of rice was considered to be the amount needed to feed one man for one year. |
 | | To be a daimyo, a samurai needed an annual income of 10,000 or more koku; an income between 100 and 9,500 koku made one a hatamoto, and an income of less than 100 koku made one a go-kenin. |
 | | For example, according to the rules of 1649, a hatamoto with an income of 300 koku per year would have to supply one go-kenin samurai, one spearman, one armor-bearer, one groom, one sandal-bearer, one hasamibako-bearer, one baggage carrier, and himself. |
| www.sizes.com /units/koku.htm (160 words) |
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