 Under Soviet occupation, people in Burgenland had to endure a period of serious mistreatment and an extremely slow economic progress, the latter induced by the investor-discouraging presence of Soviet troops.The Soviet occupation ended with the signing of the Austrian Independence Treaty of Vienna in 1955 by the Occupying Forces.The brutally crushed Hungarian Revolution on 23 October 1956 resulted in a wave of Hungarian refugees at the Hungarian-Austrian border, especially at the Andau Bridge (Brücke von Andau).