There should be Pacific ports in the Americas. You have a cost line from Peru to British Columbia. If these don’t have ports or transition boxes for ships, I think that they will catch a little flack for it.
Sadly I think South America is out.

The only regions of Americas i've seen in the maps thus far is north america. I assume New France and 13 colonies will both be there, and maybe some southern territories controlled by Spain given the time frame.

So far, our best guess on trasition zones, is that your just in a zone since you can't conquer them or establish cities in them apparently.

So for instance Canary Islands is a transition zone I think, and it just is.

Only areas we know are in is Europe, India, Carribean and Noth America, beyond that it's guess work.

You know until we have

a

DEMO