Given the task definition, example input & output, solve the new input case.
In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Example: The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Output: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".

New input case for you: The Arizona Territory was an American territory from February 24 , 1863 to February 14 , 1912 .
Output:
The Territory of Arizona ( also known as Arizona Territory ) was a territory of the United States that existed from February 24 , 1863 until February 14 , 1912 , when the remaining extent of the territory was admitted to the Union as the state of Arizona .