Is it possible if anyone here can give me a short definition of "Declaration of Independence" and the importance of it?

The Declaration of Independence, the founding document of the United States, was approved by the Continental Congress on July 4, 1776, and announced the separation of 13 North American British colonies from Great Britain. It explained why the Congress on July 2 “unanimously” (by the votes of 12 colonies, with New York abstaining) had resolved that “these United Colonies are, and of right ought to be Free and Independent States.”

Explanation:

Importance:

The importance of the Declaration of Independence can hardly be overstated. It established for the first time in world history a new nation based on the First Principles of the rule of law, unalienable rights, limited government, the Social Compact, equality, and the right to alter or abolish oppressive government.

us court of appeals for the 11th circuit