Mantle convection is a process of that creates clrcular currents in the asthenosphere. As a result, the
plates slowly move.

Mantle convection is a process of which less dense material rises and more dense material sinks that creates ccircular currents in the adthenosphere. As a result, the tectonic

plates slowly move.

the only other powers were germany russia and uk and they were too busy fighting each other wearing each other down   that the us was becoming strong and they were becoming weaker