One factor that contributed to the growth of slavery in the American South was A.
completion of the Transcontinental Railroad
B.
demand for cotton in the textile mills of the North
C.
development of cattle trails that linked Texas with railroads
D.
resistance to westward expansion by American Indian groups

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.

answer; empathy;

answer; existed; limited;