Question

America's victory in the Revolutionary War was made more probable for the following four factors:

because George Washington was an excellent leader
through money, supplies, soldiers, and ships that were presented through foreign aid from France
because of serious blunders on the part of the British commanders
because the colonists were courageous in fighting for a cause in which they believed
because England hired the Hessian mercenaries

Answer 1

ALL of these factors contributed to America's success, EXCEPT:
1. because of serious blunders on the part of the British commanders
2. because England hired the Hessian mercenaries

Answer 2

As far as I undersrood there can be more than one correct so, I consider these options as the most accurate :
because George Washington was an excellent leader
through money, supplies, soldiers, and ships that were presented through foreign aid from France

because the colonists were courageous in fighting for a cause in which they believed

I'm sure it helps! Regards.