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.
Q: It existed from May 30 , 1854 , until March 1 , 1867 , when the part of the territory was admitted to the Union as the State of Nebraska .
A: 
The Territory of Nebraska was an organized incorporated territory of the United States that existed from May 30 , 1854 , until March 1 , 1867 , when the final extent of the territory was admitted to the Union as the State of Nebraska .