did the first member serve as an ambassador?
Yes, to Great Britain.
John Adams
Adams was appointed the first American ambassador to Great Britain in 1785. 
which group is responsible for adopting the declaration of independence Second Continental Congress who created the draft? The "Committee of Five". who were its members? John Adams, Benjamin Franklin, Thomas Jefferson, Robert R. Livingston and Roger Sherman. did they have any arguments about it? Yes, John Dickinson made one last effort to delay the decision, arguing that Congress should not declare independence without first securing a foreign alliance and finalizing the Articles of Confederation. what was the profession of the second member of the committee? He was a writer, printer, political philosopher, politician, Freemason, postmaster, scientist, inventor, humorist, civic activist, statesman, and diplomat. which scientific experiments were undertaken by him? He did an experiment to prove that lightning is electricity by flying a kite in a storm that appeared capable of becoming a lightning storm. what was his stand on slavery? Franklin profited from both the international and domestic slave trade. what was the topic of the correspondence of the first member of the committee with the third member? A brief note wishing him a happy and prosperous presidency.
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John Adams [SEP] Ambassador to Great Britain
Adams was appointed the first American ambassador to Great Britain in 1785. When a counterpart assumed that Adams had family in England, Adams replied, "Neither my father or mother, grandfather or grandmother, great grandfather or great grandmother, nor any other relation that I know of, or care a farthing for, has been in England these one hundred and fifty years; so that you see I have not one drop of blood in my veins but what is American." After arriving in London from Paris, Adams had his first audience with King George III on June 1, which he meticulously recorded in a letter to Foreign Minister Jay the next day.