Where does “โอคลาโฮมา” come from?

โอคลาโฮมา (Thai) comes from English Oklahoma, from Choctaw okla, from Choctaw homa — red.

Ancestry of “โอคลาโฮมา”, step by step

Step	Language	Word	Meaning
1	English	Oklahoma	—
2	Choctaw	okla	people, tribe, nation, population
3	Choctaw	homa	red