Adolescence became a defined life stage in the united states when:

They became a defined life stage when President Franklin Roosevelt encouraged universal high school attendance.
The encouraged was made as a response to the great depression. People in adolescent years are really important because we're in that crucial else which will pretty much determine the quality of American workforce in the future.

Communism best describes china's government

which of the following is a subsurface event that takes place during the rock cycle?

  cementing  erosion  melting  weathering