(Dawntrail End Spoilers) Why No Medieval Zones

[Toutatis]

It doesn't.

Medieval north America would mean Native American nomadic tribes in tents.
Medieval south America would mean ancient Aztec stuff. Tuliyollal is pretty much as close as we're going to get to that.

America != Europe. It was settled by Europeans AFTER the Medieval times.

The only thing I found weird is that SE didn't use Archaeo Alexandria for ... literally anything.

Oof! North American indigenous peoples are more than just «Native American» (an outdated term btw) nomadic tribes. Several groups were sedentary and North America is not just the USA. Btw the «Aztec stuff» was in North America, not South America. As for European presence in North America, the Vikings made their way there centuries before Columbus and the others that came after.

There were many cultures and civilizations is what is known today as the American continent.