Origin

The character 掌 combines the hand radical 手 at the bottom — which tells you this kanji relates to hands and things you do with them — with 尚 at the top, which serves as a sound hint indicating roughly how the character should be pronounced. The hand component naturally connects to the primary meaning of the palm, the inner surface of your hand. From there, the extended meanings of "rule" or "administer" developed from the idea of holding something in your palm, suggesting control or authority over it. This same logic appears in other languages too — the notion of having something "in hand" implies mastery or command.