Correction, you English got your butts kicked us Celts were not involved 
Incorrect.
The Act Of Union between Scotland and England was signed in 1707 - a full 80 or so years before American independence. America gained independence from the United Kingdom - including Scotland, not from England.
Curiously, the US citizenship test gets this wrong as well:
Q: From which country did the United States of America gain independence?
Was it:
A: France
B: Germany
C: Spain
D: England
Aparently they have a bit of a hissy-fit when you add :
E: None of the above
Have a great holiday folks - happy 4th