Below you can find the On april 1 1945 u.s. forces landed on this largest of the ryukyu islands; in 1972 we gave it back to japan Jeopardy Words Answer. The answer to On april 1 1945 u.s. forces landed on this largest of the ryukyu islands; in 1972 we gave it back to japan has 7 letters. This clue belongs to the Historic geography category and is part of Jeopardy Word Level 2355. If you scroll near the bottom you will find other clues and answers part of level 2355