Terrifying History on Instagram: "On March 15, 1938, Adolf Hitler delivered a speech from the Hofburg Palace in Vienna to a massive crowd gathered on the Heldenplatz square. This event followed the peaceful but coercive annexation of Austria by Nazi Germany, known as the Anschluss, which had begun with the entry of German troops on March 12. In his speech, Hitler proclaimed the completion of what he called “the most important mission” of his life—the unification of his native Austria with the Ge