I don't think the "rest of the world" does anything consistently! :) But the pronunciation difference between Indiana ("short I", in-dee-ANN-uh) vs Idaho ("lon

I don't think the "rest of the world" does anything consistently! :) But the pronunciation difference between Indiana ("short I", in-dee-ANN-uh) vs Idaho ("long I", EYE-duh-hoe) isn't necessarily meaningful. The letter I just has multiple common pronunciations in English, which I'm told is confusing for learners!