The concept of an independent, protestant church within a civil republic provided a design for society that provided great religious and political freedom for the citizens of:

I believe the answer is: Geneva

Citizens of Geneva is known for their neutralisitc attitude toward other groups/society. People of Geneva would receive very little negative impact for expressing their political views or religion. This is why their ambassador usually trusted as mediators for countries who are in conflict.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place