This was a system under which land and labor were exchanged for defense
colonialism, communism, feudalism, imperialism

At which point on the diagram do convection currents occur to drive plate movement?

The chemical or mechanical process by which rock is gradually broken down eventually becoming soil

Rah is completing a school project on the expansion of fast food restaurants across the united states. she finds a map that shows a clear pattern of restaurants beginning in the east and expanding west. this map was most likely created using the technology of