The Articles of Confederation was the first document covering the thirteen colonies.
(See attached link.)
It did talk about what "constitutes" the American colonies, but it's not technically a constitution. The US Constitution was ratified in 1787.
American constitution
The first paragraph of the constitution is called the Preamble. The US Constitution preamble is the brief introduction of the purpose and principles of the constitution.
The Articles of Confederation
Preamble
The Articles of Confederation
the Bill of Rights is part of the Constitution
George Washington
Reginald
The Bill of Rights is the name for the first 10 amendments to the Constitution.
Benjie Franklin
USS Constitution
The Articles of Confederation