You have your origin state. For Japan (since this is a Japanese word), that would be the main island, the big one in the middle: Honshu. You'll have to know some minor Japanese geography for this. Go look at a map of Japan and study it over real quick to see where I'm talking about if you don't know already.

This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.