The word experiment contains the latin root Peri meaning to try or test. The words expert and experience contain the same root. How could experiments provide the experience for someone to become an expert?

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

which of the following is a subsurface event that takes place during the rock cycle?