During a class session your instructor describes the upcoming test and you roll your eyes. the eye rolling is considered to be

The eye-rolling expression is a passive-aggressive corporal response to any undesired situation or person. The eye-rolling is this case will show my disapproval for the upcoming test. It is a common expression used to avoid physical contact in this kind of situations.

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