America's victory in the Revolutionary War was made more probable for the following four factors:___________
a) because George Washington was an excellent leader
b) through money, supplies, soldiers, and ships that were presented through foreign aid from France
c) because of serious blunders on the part of the British commanders
d) because the colonists were courageous in fighting for a cause in which they believed
e) because England hired the Hessian mercenaries