Montesquieu, a French philosopher, influenced the framers of the Constitution. His contribution was

 conceived the idea of separating government authority into the three major branches: executive, legislative and judicial. This perspective significantly influenced the authors of the Constitution in establishing laws and division of duties, and also in the inclusion of provisions to preserve individual liberties.

Explanation:

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774