After the dissolution of the Austro-Hungarian monarchy in 1918 the areas in which Burgenland Croats lived were divided between Austria, Czechoslovakia and Hungary. After 1921 most of these areas became part of Austria, which established a new province of Burgenland, after which the Croatian minority was named. In 1922 Austria founded the "Apostolic administration of Burgenland" and began to abolish bilingual schools through the introduction of the teaching of German in all primary schools. This process was temporarily stopped after "The National Education Act", that allowed the work of the Croatian elementary schools, was adopted. After Hitler Annexed Austria in 1938 this law was abolished. In 1955 the "Austrian State Treaty" was signed. It gave permission to the Burgenland Croats to use Croatian in education, judiciary and public administration. With the adoption of the "Law on National Minorities" in 1976 use of Croatian in public life became limited. After constitutional complaint was accepted in 1987 parts of the law were changed and Croatian was introduced as an official in 6 out of 7 districts of Burgenland.