Answer:
Fighting for a common cause.
Making use of British mistakes.
Step-by-step explanation:
Continental army was made up of British Ex-colonists who joined together to fight out both economic and political oppression that the British government imposed to their people.
At that time, they managed to capitalize on British army's mistakes because the British army heavily underestimated the continental army. They took the British by surprised and managed to did heavy damage that won them the war.