Answer :
Americans were able to convince the French to help them in the War because the France gave the money, weapons, personnel, military leadership, and naval assistance that turned the balance of military strength in favor of the United States and laid the path for the Continental army's eventual victory.
What compelled the French to support the American cause?
The triumph of the Americans over the British at Saratoga persuaded the French that the Americans were devoted to freedom and worthy partners in a formal alliance.
The americans were able to persuade the French to support them in the war, as the France provided many services to them that shifted the balance of military power in favor of the US and paved the way for the Continental army's final success.
Therefore, the French played the major role to support the America.
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