How does the quote “ if taxes are laid up an is in any shape without our having a legal representation where they are laid, are we not reduced from the character of free subjects to the miserable state of tributary slaves? ” -samuel adams answer the question: why did american colonist want independence?

Hai :3
I answered this question before, if you look it up.
What Samuel Adams is trying to say is that, if the British parliament is going to tax on the American colonists, then the colonists should have a say on the parliament when it comes to both taxes and laws.
This is where the famous phrase "NO TAXATION WITHOUT REPRESENTATION" comes from.
American colonists wanted independence due to this unfair treatment that the British gave to the colonists, as well as no say in Parliament. 

Cheers!
-10th Grader Snow