This is from I ready and I need help

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.

answer; collective security;

a small town is a good definition for new france in 1750. new france was the area colonized by france in north america. the area is nowadays the city of quebec in canada.

the answer is d.index