.mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}You can help expand this article with text translated from the corresponding article in Japanese. (October 2022) Click [show] for important translation instructions.
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In 1536, he promulgated the Date provincial code (Jinkaishū).[2]
Tanemune's attempt to have Uesugi Sadazane, the childless head of the Uesugi, adopt Sanemoto and make him his heir, sparked a civil war within the Date known as the Tenbun War [ja] from 1542 to 1548 which resulted in Tanemune's replacement as clan head by his eldest son, Harumune.[3][4]