What is the purpose of the preamble

The core purpose of the preamble of the Declaration of Independence was to declare independence from their mother country, Great Britain.

To justify to the world why their rebellion is rational and why they deserve independence from the British Empire.

To protect American colonists’ natural rights – Life, Liberty and the Pursuit of Happiness.

Explanation:

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impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress