In his book Freedom Betrayed: Herbert Hoover’s Secret History of the Second World War and Its Aftermath, the former president repeatedly complained about President Franklin D. Roosevelt’s “fright campaign” to get the United States into World War II. In his terrifying Navy Day address on October 27, 1941, Roosevelt claimed to have a “secret map” showing Nazi plans to invade South America, targeting Brazil and the Panama Canal. The key section of his Navy Day address began with Roosevelt saying, “I have in my possession a secret map made in Germany by Hitler’s Government—by planners of the new world order. It is a map of South America and a part of Central America, as Hitler proposes to reorganize it.”

Hoover was skeptical. He conducted his own personal investigation into FDR’s secret map. “Four years later, after the German surrender, I was in Germany,” he wrote. “The American Army authorities informed me they had been instructed to search for these plans,” former President Hoover added. The result of Hoover’s investigation was fruitless. “Our officials informed me there were no such plans in the captured German files.” 

Hoover was not the only one to investigate the origins of Roosevelt’s secret map. According to Lynne Olson’s book Those Angry Days: Roosevelt, Lindbergh, and America’s Fight over World War II, 1939-1941, the German government engaged in a frantic search to find out if it had produced the map. The result of this search was also fruitless. Four days after Roosevelt’s speech, Germany’s Foreign Minister Joachim von Ribbentrop “flatly denied the existence of such a map” and he called it a forgery “of the crudest and most brazen kind.” So, who was telling the truth, Roosevelt or von Ribbentrop?

With a sense of genuine surprise, Olson wrote that “the Reich was telling the truth.” Olson said that “it was a forgery, the product of a clandestine BSC unit in downtown Toronto called Station M.” BSC, which stands for British Security Coordination, was a covert arm of MI6, Britain’s Secret Intelligence Service. Creating fake documents at its Toronto “phony-document factory” was only one part of BSC’s covert operations. According to Thomas E. Mahl’s book Desperate Deception: British Covert Operations in the United States, 1939-44, BSC infected the public opinion polling industry to rig polls and to influence the congressional decision-making process. Mahl wrote, “Unknown to the public, the polls of Gallup, Hadley Cantril, Market Analysts Inc. [run by Sanford Griffith], and Roper were all done under the influence of dedicated interventionists and British intelligence agents.”

story continues here including how the Russians got the Japanese to attack the USA