What was promised to southern states that allowed slaves to join the Continental Army? What was the response of southern states?

as in america, they were promised to send a presidential candidate to promote their state.

acid rain is the answer

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.