For reference, in the more recent stream with Beach they briefly brought up the continent lens and the continents seem to be a little more well defined, although it's very hard to tell clearly, with a lot of unknown variables at play, and the map mostly unexplored. But you can see over on the right, there is a mountain range dividing the purple and orange coloured continents. In the north west, a mountain tile is
also the border between two continents, but it kind of looks the same orangey colour and I hope it's not the same continent as in the south.
Of course this still illustrates the arbitrary gamey-ness of the fact that America's capital is literally on the border of two continents and the player's game experience would be drastically altered if the AI's city was moved by a single tile, due to Teddy's agenda. (The worrying thing is, Beach pointed this out in the stream as if it was a cool thing.) There's also the fact that Teddy will get a combat bonus on 5 of the 6 hexes that surround his capital, but not the sixth. This would lead to certain gameplay decisions (like attacking the city from that specific tile) that while on some level ARE interesting decisions, they are quite arbitrary and completely unrelated to the thematic justification of America's homeland protectionism.