its creation in 1945. There is some contention over whether Silesian is a dialect or a language in its own right. Most Polish linguists consider Silesian to be a prominent regional dialect of Polish. However, many Silesians regard it to be a separate language belonging to the West Slavic branch of Slavic languages, together with Polish and other Lechitic languages, such as Upper and Lower Sorbian, Czech and Slovak. In July 2007, the Silesian language was officially recognized by the Library of Congress and SIL International. The language was attributed an ISO code: SZL. The first official dictation contest of the Silesian language took place in August 2007. Although the German language is still spoken in Silesia, as it has a sizable minority of speakers in the Opole Voivodship in Poland, the vast majority of native speakers were expelled during or after 1945. Therefore, the number of German speakers in the region was radically and significantly decreased after World War II, even though the Germans had settled there for centuries. The Silesian German dialect is a distinct variety of East Central German, with some West Slavic influence likely caused by centuries of contact between Germans and Slavs in the region; the dialect is related to contemporary Saxon in some ways. The Silesian German dialect is often misleading referred to as Lower Silesian in the German language. The usage of this dialect appears to be decreasing, as most Silesian Germans prefer either Standard German or even Polish. Historical data Prussian Lower Silesia In year 1819, the Breslau Regency had 833,253 inhabitants, the majority of whom—755,553 (90%)—were German-speakers; with a Polish-speaking minority numbering 66,500 (8%); as well as 3,900 Czechs (1%) and 7,300 Jews (1%). The Liegnitz Regency was inhabited by Germans with a small Sorbian minority. Prussian Upper Silesia The earliest exact census figures on ethnolinguistic or national structure (Nationalverschiedenheit) of the Prussian part of Upper Silesia, come from year 1819. The last pre-WW1 general census figures available, are from 1910 (if not including the 1911 census of school children—Sprachzählung unter den Schulkindern—which revealed a higher percent of Polish-speakers among school children than the 1910 census among the general populace). Figures (Table 1.) show that large demographic changes took place between 1819 and 1910, with the region's total population quadrupling, the percent of German-speakers increasing significantly, and that of Polish-speakers declining considerably. Also the total land area in which Polish language