What message did congress send when it closed the unorganized territory to slavery

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.

Clean air provides nitrogen

Ithink it would be choice b (county). hope this you!