And it was. On March 4, 1782, the House of Commons voted for peace. Commissioners for both sides meeting in Paris agreed on terms on November 30, 1782. The formal treaty was ratified on September 3, 1783. The United States of America existed in law as well as in fact.
What had begun as an attempt by Britain to balance her budget after the victorious French and Indian War ended with an independent United States. She also gave Florida back to the Spanish who returned Louisiana to the French. Perhaps wiser men than George Grenville and George III might have prevented the separation. Probably not. Thomas Paine put it so simply and so persuasively, "An Island was not meant to rule a continent."
Bibliography
Abbot, William W. A VIRGINIA CHRONOLOGY 1585-1783, "To pass away the time". Williamsburg, Virginia, 1957.
Alden, John R. A HISTORY OF THE AMERICAN REVOLUTION. Knopf, New York, New York, 1969.
Alden, John R. THE SOUTH IN THE REVOLUTION, 1763-1789. Louisiana State University Press, Baton Rouge, Louisiana, 1957.
Allen, Gardner W. A NAVAL HISTORY OF THE AMERICAN REVOLUTION. 2 Volumes, Boston, Massachusetts, 1913.
Bailyn, Bernard. IDEOLOGICAL ORIGINS OF THE AMERICAN REVOLUTION. Harvard University Press, Cambridge, Massachusetts, 1967.