The answer is the moon i believe
The society wanted abolishment of slavery, but didn't think they would integrate into american society. they sought to free slaves and send them to Africa
As a new oceanic crust is added at the mid-oceanic plate, the seafloor spreads apart—the plates push away from each other ( like a conveyor belt)—the seafloor moves towards the edge of the oceanic plate and eventually gets pulled back down into the magma below.
