What type of gesture does Minority languages of Austria and Austrian State Treaty have in common?
Austrian State Treaty The Austrian State Treaty (German:    ) or Austrian Independence Treaty re-established Austria as a sovereign state. It was signed on 15 May 1955 in Vienna, at the Schloss Belvedere among the Allied occupying powers (France, the United Kingdom, the United States, and the Soviet Union) and the Austrian government. It officially came into force on 27 July 1955.
Austrian Sign Language Austrian Sign Language, or "Österreichische Gebärdensprache" (ÖGS), is the sign language used by the Austrian Deaf community—approximately 10,000 people (see Krausneker 2006).