What role does the Constitution play in uniting the states?

The preamble of the United States Constitution reads as follows:
“We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America.”
Please explain how the US Constitution might achieve each of the following. Use and cite specific examples from the Constitution to support each answer. Your responses should, first and foremost, include historical context, or what each meant at the time of the nation’s beginnings, but you are also welcome to explain how these purposes translate to our modern world.
How does the Constitution form a more perfect Union? In other words, what role does the Constitution play in uniting the states?
How does the Constitution establish Justice?
How does the Constitution insure domestic Tranquility?
How does the Constitution provide for the common defense of the country?
How does the Constitution promote general Welfare?
How does the Constitution secure the Blessings of Liberty?
( the link for the Constutional Topic: The Preamble is provided for to interpret each purpose in the preamble)

Last Completed Projects