New York 250th Anniversary CanvasKey to the Continent, Art Deco Patriotic Wall Print John Adams called New York "a kind of key to the whole continent", and the Battle of Saratoga in 1777 proved exactly how right he was. Deep in the Hudson Valley, American forces won the most decisive engagement of the Revolutionary War, securing French alliance and sealing Britain's eventual fate. Historian Edmund Morgan described it as a great turning point, and it happened in New York. This Art