What document declares that "We the people of these United States, in order to form a more perfect union"?

A. The preamble of the United States Constitution.

B. The Second Treatise on Government.

C. The Declaration of Independence.

D. Politics Among Nations.

A. The preamble of the United States Constitution.

Explanation:

The preamble of the United States Constitution meant to be introductory statement of constitution which consist of basic principles and guidance rules. Basically it consist of some goals like to ensure justice, equality, defense, liberty and prosperity, and one goal is be be union and ensure unity.