Where does “ロサンゼルス” come from?

ロサンゼルス (Japanese) comes from English Los Angeles, from Spanish Los Ángeles — The Angels.

ロサンゼルス (Japanese): Los Angeles

Definitions

Step	Language	Word	Meaning
1	English	Los Angeles	—
2	Spanish	Los Ángeles	The Angels

ロサンゼルス — Etymology, Origin & Word History | Etymology Explorer