the dictatorship of Adolf Hitler. Austria and Czechoslovakia Main articles: Anschluss and German occupation of Czechoslovakia Further information: Protectorate of Bohemia and Moravia (Top) Hitler proclaims the Anschluss on the Heldenplatz, Vienna, (Bottom) Ethnic Germans use the Nazi salute to greet German soldiers as they enter Saaz, 1938 In February. Nazi Germany's racial policy was based on their belief in the existence of a superior master race. Under threat of invasion by sea, Lithuania surrendered the Memel district in March 1939. They promised to strengthen the economy and provide jobs. Many chose to stay in continental Europe. The Law for the Restoration of the Professional Civil Service, passed in April, removed from their jobs all teachers, professors, judges, magistrates, and government officials who were Jewish or whose commitment to the party was suspect. The nsdap anthem " Horst-Wessel-Lied " Horst Wessel Song became a second national anthem.