why did he go to france?
He was sent by the Congress of the Confederation to join Benjamin Franklin and John Adams in Paris as Minister Plenipotentiary for Negotiating Treaties of Amity and Commerce.
Thomas Jefferson
In 1784, Jefferson was sent by the Congress of the Confederation to join Benjamin Franklin and John Adams in Paris as Minister Plenipotentiary for Negotiating Treaties of Amity and Commerce with Great Britain, Russia, Austria, Prussia, Denmark, Saxony, Hamburg, Spain, Portugal, Naples, Sardinia, The Pope, Venice, Genoa, Tuscany, the Sublime Porte, Morocco, Algiers, Tunis, and Tripoli. 
who did the united states declare independence from British when did this take place? July 4, 1776 who was the president during this time? Thomas Jefferson who adopted this declaration? Second Continental Congress who does this congress comprise of? Delegates from the Thirteen Colonies where was the president from? Shadwell in the Colony of Virginia did he ever become a lawayer? Yes where did he practice it at? UNANSWERABLE when did he become a member of the congress? UNANSWERABLE
wiki:19648428
Thomas Jefferson [SEP] Minister to France
In 1784, Jefferson was sent by the Congress of the Confederation to join Benjamin Franklin and John Adams in Paris as Minister Plenipotentiary for Negotiating Treaties of Amity and Commerce with Great Britain, Russia, Austria, Prussia, Denmark, Saxony, Hamburg, Spain, Portugal, Naples, Sardinia, The Pope, Venice, Genoa, Tuscany, the Sublime Porte, Morocco, Algiers, Tunis, and Tripoli. Some believed that the recently widowed Jefferson was depressed and that the assignment would distract him from his wife's death. With his young daughter Patsy and two servants, he departed in July 1784, arriving in Paris the next month. Less than a year later he was assigned the additional duty of succeeding Franklin as Minister to France.