If several European countries were also dividing up the Western Hemisphere wouldn't they rather use Latitude? I mean measuring Longitude was quite difficult and not done until much more recently than the New World was found.
I haven't posted much to my TL here because I'm still straightening out some starting conditions but I have quite a bit more written so I was thinking I'd run this past you Ladies, Gentlemen, and Alien Spacebats.
If in the Summer of 1500 France, England, Spain, Portugal, The Netherlands, and a United Scandinavia were sitting around a table discussing dividing up this land they had found would it make sense for them to divide it up via Latitude?
I should add that they have a better idea of it's size in my TL although not a perfect one. They know most of it's North to South extent but not how far west it goes . They have hit the islands of Newfoundland, Haiti, and one of the Falklands.