Where does “캘리포니아” come from?

캘리포니아 (Korean) comes from English California, from Spanish California.

Ancestry of “캘리포니아”, step by step

StepLanguageWordMeaning
1EnglishCaliforniaA region on the west coast of North America comprising the US state of California and the Baja California peninsula in Mexico; historically also including other areas in Alta California and Baja California
2SpanishCalifornia
Every word from Spanish CaliforniaEvery word from English California
캘리포니아 — Etymology, Origin & Word History | Etymology Explorer