Comment by defrost

Seems overstated and contrived to use 'all land'.

  Antarctica is Earth's southernmost and least-populated continent.

  Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean [ and ] is the fifth-largest continent, being about 40% larger than Europe, and has an area of 14,200,000 km2 (5,500,000 sq mi).

~ https://en.wikipedia.org/wiki/Antarctica

There was no one to "take it from" and when it was divided up by "Great powers" that was more by competition (race to open routes) and some notion of good sport:

  Antarctica was claimed by several states since the 16th century, culminating in a territorial competition in the first half of the 20th century when its interior was explored and the first Antarctic camps and bases were set up.

~ https://en.wikipedia.org/wiki/Colonization_of_Antarctica

Then there are the more remote parts of Australia, nominally "taken" by the English (despite not being reached for some time) and later returned (post Mabo) to the descendants of what seems likely to be first settlers some tens of thousands of years past (the multiple waves of settlement arguments and other aspects of the History Wars in the Black Armband / Quadrant circles are looking thin in these days of genetic markers).

But that one's a complex can of worms that takes some time to unpack.