The Zimmerman telegram, because it was an act of war
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When Japan opened some if its ports to foreign trade their long history of isolation ended. So basically, their isolation (or Japanese isolationism) is what ended.
World War II
Though I do not specifically know the president that suggested it, or if it ever has been, I believe that I saw on Merriam Webster that the first implementation of isolationism was in 1922, therefore Washington wouldn't have suggested it. Anyways, Washington didn't suggest it.
Japan tried to built it's own modern navy before Perry's return
Fear