統治
とうち · touchi · JLPT N1 · noun
rule
👑 統 = unify + 治 = govern; together they mean rule or reign over a land
統 means unify or gather under one head, and 治 means put in order or govern. Joined, 統治 means ruling a territory by bringing it under one authority and keeping it in order.
治 — water radical 氵 + 台 (phonetic)
治 originally referred to the name of a river, written with the water radical 氵 for meaning and 台 as the phonetic component. From 'managing rivers' (flood control), the meaning broadened to 'govern, regulate, manage,' and later 'cure, heal' — all senses of bringing something unruly under control.