3.4 What is the importance of the "rule of law"
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Explanation:

Under the rule of law, citizens can live and work safely. They will not be subjected to arbitrary government and are protected against any abuse of power by the state.

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