Country
Nikaidō
https://ja.wikipedia.org/wiki/%E4%BA%8C%E9%9A%8E%E5%A0%82%E6%B0%8F
Definitionin_game/setup/countries/east_asia.txt:624
625color = map_NKD
626color2 = rgb {
16
41
202
}
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https://ja.wikipedia.org/wiki/%E4%BA%8C%E9%9A%8E%E5%A0%82%E6%B0%8F