One of the main questions of economics involves deciding upon the method for
distributing goods and services.
creating goods and services.
pricing goods and services.
enhancing goods and services.

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.

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explanation:

answer; (trauma);