They did it when it was note.
Though it raises a whole new argument - their claim was that they were reclaiming lands from the Spannish Empire I believe, so does that mean they were also looking to put themselves back under Spannish rule?
Argentina as a country didn't even exist, I believe, and i also don't think there was anyone on them. Moreover, in 1982 all of the citizens on the Island wished to remain British, and not be under Argentine rule. Their opinion is surely what counts most of all.
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