How did conquering new lands most affect trade in the Roman Empire?

It led to more industries.
It led to improved roads.
It led to improved agriculture.
It led to more trading partners.

(c) spain left the philippines to the usa

The social difference that caused sectionalism in the antebellum era would be c.)  north was disorganized. the north had slow population growth, where as the south had mass immigration.hope this really mark