What country does this flag represent

During the antebellum period, religion was used by many americans to a) justify the existence of slavery. b) unify all churches against slavery. c) allow slaves to become ordained ministers. eliminate d) inspire slaves to spread christianity in africa.

Which technological breakthrough of the 1950s revolutionized the way that americans kept up with news and world events? a) radio b) internet c) television d) motion pictures

Describe two reasons that cities developed along rivers during the industrial revolution. for full credit, your response must be at least 2 complete sentences.