they are originally the argentinians or whatever had the Falklands and something happened to them so the British just went and bombed the piss out of the islands and they got them.
i know the history of the Falklands well, the Falklands aren't argentine territory today though
and no, britain and France owned them and spain claimed it so we claimed it back, then argentina got mad in 1980 so we had to claim them back again