Before revision: North America In October 1941, before the United States entered World War II, President Franklin D. Roosevelt announced that he had "a secret map" of South America titled ' Luftverkehrsnetz der Vereinigten Staaten Süd-Amerikas Hauptlinien ' .
After revision: North America In October 1941, before the United States entered World War II, President Franklin D. Roosevelt announced that he had "a secret map" of South America titled " Luftverkehrsnetz der Vereinigten Staaten Süd-Amerikas Hauptlinien " .