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Concept
Trans-Olza
Summary
Trans-Olza (Zaolzie, AUDPl-Zaolzie.oggza'olźe; Záolží, Záolší; Olsa-Gebiet), also known as Trans-Olza Silesia (Śląsk Zaolziański), is a territory in the Czech Republic, which was disputed between Poland and Czechoslovakia during the Interwar Period. Its name comes from the Olza River.
The Trans-Olza region was created in 1920, when Cieszyn Silesia was divided between Czechoslovakia and Poland. Trans-Olza forms the eastern part of the Czech portion of Cieszyn Silesia. The division did not satisfy any side, and persisting conflict over the region led to its annexation by Poland in October 1938, following the Munich Agreement. After the invasion of Poland in 1939, the area became a part of Nazi Germany until 1945. After the war, the 1920 borders were restored.
Historically, the largest specified ethnic group inhabiting this area were Poles. Under Austrian rule, Cieszyn Silesia was initially divided into three (Bielitz, Friedek and Teschen), and later into four districts (plus Freistadt). One of them, Frýdek, had a mostly Czech population, the other three were mostly inhabited by Poles. During the 19th century the number of ethnic Germans grew. After declining at the end of the 19th century, at the beginning of the 20th century and later from 1920 to 1938 the Czech population grew significantly to rival the Poles. Another significant ethnic group were the Jews, but almost the entire Jewish population was murdered during World War II by Nazi Germany.
In addition to the Polish, Czech and German national orientations there was another group of Silesians, who claimed to be of a distinct national identity. This group enjoyed popular support throughout Cieszyn Silesia, though its strongest supporters were among the Protestants in the eastern part of Cieszyn Silesia (now part of Poland), not in Trans-Olza itself.
The Polish term Zaolzie (meaning "lands beyond the Olza") is used predominantly in Poland and by the Polish minority living in the territory. It is also often used by foreign scholars, e.g. American ethnolinguist Kevin Hannan.
Official source
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