The long ago poster was incorrect. If the Continentals could not control New York City, their most important port, how could the US be viable? Oh, yes, they did not control Philadelphia or Charleston or Newport ---- but they still won.One if our posters years ago pointed out that once New Orleans fell to the Union the Confederacy was essentially doomed to non recognition. If the Confederacy can't defend it's most important port then how is the Confederacy viable?
In an earlier thread either Mason or Slidell was grilled by the British on weather or not the border states with emphasis on Kentucky and Missouri would join the Confederacy. Once it became apparent that they would not British enthusiasm for diplomatic recognition waned.