A small area surrounding the city of Teschen, ruled by the Austrian Habsburgs from the eighteenth century until World War I. It became highly industrialized in the later nineteenth century. Conflicting claims by Czechoslovakia and Poland led to violent clashes in 1919, which were arbitrated by the League of Nations in 1920. Accordingly, the area was divided so that the northern half, which included half the city as Cieszyn, went to Poland, while the southern half, with its rich coalfields, went to Czechoslovakia (Tesin). The issue soured the relations between the two countries for twenty years. In 1938, Poland became an often‐overlooked beneficiary of the Munich Agreement, whereby Germany invaded the Sudetenland, while the Poles annexed the Czech part of Teschen. In 1945 the Soviet Union decreed that the 1920–38 compromise be restored.
Subjects: Contemporary History (Post 1945).