How did the americans manage to defeat great britain ?

The battle of Yorktown was successful because the French and the Americans teamed together. The French and the Americans cut the British off so they won't run away. The French Navy defeated the British Navy and the Americans and the French troops defeated the British

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

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

i also belive it was in december 1, 1774