Television announcer al roker and singer carnie wilson have both undergone stomach stapling, or gastric bypass surgery, as a radical and invasive approach to weight loss. previously, weight loss was not usually considered a medical problem that could be addressed through surgery. this is evidence of:

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.