FWIW, that land allocation came through a lot of blood allocation. Of course, wars are fought very differently these days but I wouldn't be so quick to dismiss the "transitionary period"
We fought many wars over lands that no one occupied. In fact, we've fought many wars over maritime territories before too. Wars are far from exclusively fought via inhabiting force and invading force. How do you think those boundaries were developed in the first place? People don't grow out of the ground and we all originated from Africa. In fact, not even the whole of Africa!