Which statement best describes a challenge in the Roman economy? Rome had difficulty finding trading partners. Rome lacked resources to build infrastructure. The tax burden on citizens in Rome was too high. Trade competition led to conflict between social classes.

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