What is unique about Oklahoma's production of iodine? (Site 1)

Due to single producer of iodine.

Explanation:

The unique thing about Oklahoma's production of iodine is that it produces is the single producer of iodine in the whole country. the iodine produced by the Oklahoma comes from the deposits of iodine present inside the earth on a large area. so that's why Oklahoma is the only producer of iodine in the whole country and enough for its uniqueness.

detente translated to english means politics

answer; i believe the correct answer is (the willamete valley);