Answer:
The British would have held the advantage.
Step-by-step explanation:
The American population could provide people/manpower and loyalty to the cause, however, they wouldn't have been able to maintain their army to fight the British for long. Since the Americans initially didn't have the funding or resources to fight the British for long periods of time, the French supplied this. Additionally, when the French entered the war, they also dedicated their Navy to the cause. This dedication of the Navy made it so that the British had to fight Americans on soil and the French in sea warfare. Without French involvement the American Continental Army would have lacked the proper supplies and funding for the war efforts against the British. With the Americans lacking their key pillars of war they most likely would have lost to the British.