Whoooosh.
Did you bother to look at this? :
The American Revolution … Not the American Secession
Here -- I'll give you a snip, as I'm pressed for time and this explains it better than I could ATM,
"The two situations were not comparable in critical ways.
The colonies of Great Britain in North America were not equal partners within the British empire or contracting agents agreeing to a contract. Their legal existence came from above (the empire); they did not form it as a founding party or join it as an independent state.
Indeed, if you know anything about the coming of the Revolution, you should know that during the period 1763 to 1775 American colonists insisted that they enjoyed the rights of Englishmen while the empire said otherwise. But one looks in vain to assertions that Virginia was equal to England, for example, or that New York was equal to Scotland.
The links were drawn on the individual level: that is the language of the Declaration of Independence, which was not called the Declaration of Secession. “Life, liberty, and the pursuit of happiness” refers to people as individuals, not to colonies aspiring to be states. The social contract was between individuals who established a government, not between member states. By definition, the colonists did not establish the empire, although they were a part of it.
Defenders of secession try to deny that secession was an act of treason (after all, if secession’s a legitimate constitutional right, then exercising that right can’t be an act of treason). Where secession was, indeed, an act of treason depends on whether on sees secession as constitutional. In contrast, the revolutionaries grounded their argument on a right to revolution, a natural right (not a constitutional right) and accepted the possible consequences."
More at link.