Final answer:
The claim that Marquis persuaded the French to help the US is false. Washington's administration aimed for neutrality and did not seek French military support during the Britain-France conflict, and negotiations with France during Adams' presidency failed without Lafayette's involvement.
Step-by-step explanation:
The statement that Marquis goes back to France to try and get help and convinced the French to come back to the US to help is false. While the historical context does involve the relationship between France and the United States, at the time in question under the presidency of George Washington, the US chose a stance of neutrality during the conflict between Britain and France. Secretary of State Jefferson and Secretary of Treasury Hamilton both had reasons to avoid entangling the United States in the conflict, with Jefferson not wanting to harm French interests but also not wanting to jeopardize American security, and Hamilton focusing on maintaining good trade relations with Britain. In other attempts to address issues with France, such as the XYZ Affair during Adams' presidency, American envoys were sent to negotiate, but they were met with demands for bribes, leading to a breakdown in negotiations. Hence, Marquis de Lafayette did not return to France with the purpose of persuading the French to assist the United States in the context described in the question.