Why did many escaped slaves go live with Native American tribes?

Why was frederick douglass encouraged by the dred scott decision?

Which features are created on the exterior of a volcano when it erupts? check all that apply. vent crater hot spot lava flow boundary

Sariah enters a room with several chirping crickets in it. upon first entering the room, sariah can hear the chirping; however, as she begins to talk to her friends, she is no longer aware of the chirping even though it is still there. the fact that sariah no longer perceives the chirping sound demonstrates sensory