What factors allowed America to win the war for independence?

We quiet often hear the song, America is the land of the free and the home of the brave. American sing this phrase very fondly, but the freedom was not free and was earned with lot of hard-work, determination and courage to fight and win the war. Essentially the factors contributing for American winning the war of Independence from Britain
1. Strong Alliance with countries like France
Benjamin Franklin had secured strong French alliance for America during the revolution. Unless there is military and financial assistance offered by France, colonist certainly would have fared the worst against the British empire.
2. Debt of Britain
This was one of the primary factors that fuelled the revolution. Essentially,...