Who to make adolescence a separate developmental stage?

The American psychologist G. Stanley Hall helped to make adolescence a separate developmental stage. According his theory adolescence is an important stage of human development that occurs between the ages of 14-24. 
One of his largest and most important works is Adolescence (1904), where he defines the term adolescence as thetage of life cjharacterized with "storm and stress

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.

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