The question remains as to how Iva "saved" them. The answer may be that he was only able to save a few of them and those who were saved were forced to relocate.
Ivan said he saved countries. He also saved people but that wasn't even related to "the poor or the defeated countries"-sentence of him. It doesn't fit.
And the really big surprise would be that the south blue island shabaody and the kuraigana island can be all connected with one line :)