 Complete the following phrase:  Although the Treaty of Versailles and the Treaty of St. Germain had explicitly forbidden the unification of Austria and Germany, the native Austrian Hitler was vastly striving to annex Austria during the late 1930s, which was fiercely resisted by the Austrian Schuschnigg dictatorship. When the conflict was escalating in early 1938, Chancellor Schuschnigg announced a plebiscite on the issue on 9 March, which was to take place on 13 March. On 12 March, 