When 2 plates collide with enough force, blank occurs, breaking the crust?

The earth's internal process which drives seafloor spreading is

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

One of the main reasons the united states occupied japan after world war ii was that