The Americans could rely on their people because lots of them willingly gave their lives to defend protect and defend their homes. Also without their strong support they would have crumbled quickly. Having patriotism led them to be time passionate.
With them knowing the battle fields it gives them a little head start. Having this Home Field advantage led them to use the Guerilla Warfare.
I need better clothing
The colonist and the French and an common enemy which are the British. With that they created an alliances to make sure that the colonist won the War. The British supplied loans,naval support and extra troops.
Weak control Gov.
The American colonist weren't army trained they just knew they were fighting for their freedom. On top of them not being well trained they were significantly outnumber by TRAINED soliders
The American colonist weren't properly prepared for this war they just used with the had. They had shortages in clothing weapons ammunition and food. Most colonist fought in their everyday wear no special suits.
i'm starving but the war must go on!
The colonist didn't have a strong Gov. to lead them to victory. They had about 20,000 men compared to the British's 80,000.