This is the non-desert version of the peace levels. Same concept as the first batch of scenarios, with their military elements removed and replaced with a different set of challenges. Some were edited more than others, with the third map getting a huge chunk of the edits.
Via Cassia is based on the Italia map by Marcus Dominus which is in the downloads section. The Lost Colony is from a map called Roanoke, which is part of the "New World" campaign by Dragon2. It's an alternate map though and was designed by Incontinentia (as indicated in a scenario design forum thread on Roanoke). Terra Nova is based on a map called New World by etts which is in the downloads.
"The Price of Peace"
Twin tasks of dealing with an export emergency as you wind your streets thru the existing native settlements.
Moving goods across the 3 strips of land will be a main concern. Plus, you'll need to import more than a few items to address your city's lack of raw materials. A few abandoned mines may offer some help. Loaded as a saved game.