Then why not say they belong to the french, they were there even before the brits?
As far as I can read Las Malvinas were occupied by spanish and british forces, then the brits volountarily abandoned the place[0]
[0](https://en.wikipedia.org/wiki/Falkland_Islands#cite_note-FOO...)
There was a British colony on the Falklands before Argentina even existed as a country. It was unnamed and unoccupied by anyone.