 Historic Silesia, superimposed on modern international borders: The mediæval Bohemian crown land (as of 1538) outlined in cyan, Prussian Silesia as of 1815 in yellow Coat of Arms of Lower Silesia Coat of Arms of Upper Silesia  '''Silesia''' ( or ;  ; ; Silesian German: ''Schläsing''; ; Silesian: ''Ślůnsk'' ; ) is a historical region of Central Europe located mostly in Poland, with smaller parts also in the Czech Republic, and Germany.  Silesia is rich in mineral and natural resources, and includes several important industrial areas. Silesia's largest city and historical capital is Wrocław. Other large cities are Opole and Katowice in Poland, Ostrava and Opava in the Czech Republic, Görlitz in Germany. Its main river is the Oder (in German; in Polish and Czech: ''Odra'').  Silesia's borders and national affiliation have changed radically over time, both when it was a hereditary possession of noble houses and after the rise of modern nation-states. The first known states to hold power there were those of Greater Moravia  at end of 9th century and Bohemia early in the 10th century. In the 10th century Silesia was incorporated into the early Polish state, but it later broke into independent duchies, coming under increasing Czech and German influence. It came under the rule of the Crown of Bohemia, which passed to the Austrian Habsburg Monarchy in 1526. Most of Silesia was conquered by Prussia in 1742, later becoming part of the German Empire and German Reich up to 1945. After World War I (1918) the easternmost part of this region was awarded to Poland by the victorious Allies after rebellions by Silesian Polish people and a plebiscite. After World War II (1945) the bulk of Silesia was transferred to Polish jurisdiction and become legally and politically part of Poland. Meanwhile the remaining small parts of Silesia mostly went to Czechoslovakia after World War I, and are now in the Czech Republic.   {| class=&quot;wikitable&quot; |- ! Status !! Time |- | possibly as a lands of Silings—supposedly an East Germanic tribe || to 5th century AD. |- | as lands of Slavic Silesian tribes || from 5th century to 9th century |- | within Great Moravia || at the end of 9th century |- | within Bohemia || in the 10th century |- | within Poland || from the end of the 10th century to 12th century |- | as independent Silesian Piasts Duchies of Silesia || 12th century to 14th century |- | as Duchies of Silesia within Bohemian Crown || 1335 to 1526 |- | within Bohemian Crown as part of  Habsburg Monarchy || 1526 to 1742 |- | within Kingdom of Prussia, German Empire, with a small part in Austria || 1742 to 1918 |- | within Germany, and part as Silesian Voivodeship (1922–1939 in Poland), and a small part in Czechoslovakia|| 1918 to 1945 |- | within Poland, much smaller parts in Czech Republic and  Germany || from 1945 |}  Most inhabitants of Silesia today speak the national languages of their respective countries (Polish, Czech, German). There is an ongoing debate whether a local Silesian speech should be considered a Polish dialect or a separate language. There also exists a Silesian German or Lower Silesian language, although this form of German is almost extinct.  ==Etymology== The names of Silesia in the different languages most likely share their etymology—'''Latin''' and '''English''': ''Silesia''; '''Polish''': ''Śląsk''; '''Old Polish''': ''Ślążsk[o]''; '''Silesian''': ''Ślůnsk''; '''German''': ''Schlesien''; '''Silesian German''': ''Schläsing''; '''Czech''': ''Slezsko''; '''Slovak''': ''Sliezsko''; '''Kashubian''': ''Sląsk''; '''Upper Sorbian''': ''Šleska''; '''Lower Sorbian''': ''Šlazyńska''. The names are all related to the name of a river (now Ślęza) and mountain (Mount Ślęża) in mid-southern Silesia. The mountain is a prehistoric holy place.  ''Ślęża'' is listedZbigniew Babik, &quot;Najstarsza warstwa nazewnicza na ziemiach polskich w granicach średniowiecznej Słowiańszczyzny&quot;, Uniwersitas, Kraków, 2001. as one of the numerous preindoeuropean topographic names in the region (see old European hydronymy). The name ''Ślęża'' may come from the ''Silingi'', a probably Vandalic (West Slavonic or East Germanic) people that may have migrated south from the Baltic Sea along the Elbe, Oder and Vistula rivers in the 2nd century. Alternatively, the name of the Silingi tribe may come from the name of the river or mountain.  ==History==  Poland's fragmentation, 1172–1177]]  Silesia has been inhabited from time immemorial by people of multiple ethnic groups. Germanic tribes were first recorded within Silesia in the 1st century. Slavic peoples arrived in this territory around the 6th century. The first known states in Silesia were the Czech proto-states of Greater Moravia and Bohemia. In the 10th century, Polish ruler Mieszko I incorporated Silesia into the Polish state.  In the Middle Ages, Silesia was divided among many independent duchies ruled by various Silesian dukes of the Piast dynasty. During this time, cultural and ethnic German influence increased due to immigrants from the German-speaking components of the Holy Roman Empire. Between 1289 and 1292, Bohemian king Wenceslaus II became suzerain of some Upper Silesian duchies. Silesia subsequently became a possession of the Bohemian Crown under the Holy Roman Empire in the 14th century, and passed with that crown to the Habsburg Monarchy of Austria in 1526. The Duchy of Crossen was inherited by Margraviate of Brandenburg in 1476 and, with the renunciation by King Ferdinand I and estates of Bohemia in 1538, it became an integral part of Brandenburg.  In 1742, most of Silesia was seized by King Frederick the Great of Prussia in the War of the Austrian Succession and subsequently made the Prussian Province of Silesia. Consequently, Silesia became part of the German Empire when it was proclaimed in 1871.  After World War I, Upper Silesia was contested by Germany and the newly-independent Second Polish Republic. The League of Nations organized a plebiscite to decide the issue in 1921, whose results (disputed by Poland) were skewed by the German population and therefore wished to remain part of Germany. Following the third Silesian Uprising (1921), however, the easternmost portion of Upper Silesia (including Katowice), with a majority ethnic Polish population, was awarded back to Poland, where it was formed into the Silesian Voivodeship. The Prussian Province of Silesia within Germany was then divided into the provinces of Lower Silesia and Upper Silesia. Meanwhile Austrian Silesia, the small portion of Silesia retained by Austria after the Silesian Wars, was mostly awarded to the new Czechoslovakia (becoming known as Czech Silesia), although most of Cieszyn and territory to the east of it went to Poland (see Zaolzie).  In 1945, at the end of World War II, all of the former German Silesia was occupied by the Soviet Union, and under the post-war border changes most of it eventually became part of Poland. As a result the vast majority of the ethnic German population that had been settled there for centuries was expelled by force and replaced by Polish settlers, most of whom had themselves been expropriated and forcefully expelled from the former eastern parts of Poland (Kresy) that had been occupied by the Soviet Union.  The administrative division of Silesia within Poland has changed several times since 1945. Since 1999 it has been divided between Lower Silesian Voivodeship, Opole Voivodeship, Silesian Voivodeship and Lubusz Voivodeship. Czech Silesia is now part of the Czech Republic, forming the Moravian-Silesian Region and the northern part of Olomouc Region. Germany retains the Silesian-Lusatian region (''Niederschlesien-Oberlausitz'' or ''Schlesische Oberlausitz'') west of the Neisse, which is part of the federal-state of Saxony.  ==Geography== First map of Silesia by Martin Helwig, 1561  Most of Silesia is relatively flat, although its southern border is generally mountainous. It is primarily located in a swath running along both banks of the upper and middle Oder (Odra) river, but it extends eastwards to the upper Vistula river. The region also includes many tributaries of the Oder, including the Bóbr (and its tributary the Kwisa), the Barycz and the Nysa Kłodzka. The Sudeten mountains run along most of the southern edge of the region, though at its south-eastern extreme it reaches the Silesian Beskids and Moravian-Silesian Beskids, which belong to the Carpathian range.  Historically, Silesia was bounded to the west by the Kwisa and Bóbr rivers, while the territory west of the Kwisa was in Upper Lusatia (earlier ''Milsko''). However, because part of Upper Lusatia was included in the Province of Silesia in 1815, in Germany Görlitz, Niederschlesischer Oberlausitzkreis and neighbouring areas are considered parts of historical Silesia. Those districts, along with Poland's Lower Silesian Voivodeship and parts of Lubusz Voivodeship, make up the geographic region of Lower Silesia.  Silesia has undergone a similar notional extension at its eastern extreme. Historically it extended only as far as the Brynica river, which separates it from Zagłębie Dąbrowskie in the Lesser Poland region. However to many Poles today, Silesia (''Śląsk'') is understood to cover all of the area around Katowice, including Zagłębie. This interpretation is given official sanction in the use of the name Silesian Voivodeship (''województwo śląskie'') for the province covering this area. In fact the word ''Śląsk'' in Polish (when used without qualification) now commonly refers exclusively to this area (also called ''Górny Śląsk'' or Upper Silesia).  As well as the Katowice area, historical Upper Silesia also includes the Opole region (Poland's Opole Voivodeship) and Czech Silesia. Czech Silesia consists of a part of the Moravian-Silesian Region and the Jeseník District in the Olomouc Region.  ==Natural resources== Silesia is a resource-rich and populous region. Bituminous and lignite coal is abundant, and a substantial manufacturing industry is present, particularly in Upper Silesia. Lower Silesia features large copper mining and processing between the cities of Legnica, Głogów, Lubin and Polkowice. Recently, the estimate of lignite reserves near Legnica has been upgraded to about 35 billion tonnes, making them some of the largest in the world.[ Article &quot;We have the largest reserves of lignite in the world&quot;, Gazeta Wyborcza, 2008-01-08 (in Polish)]  The following minerals have also been mined in Silesia: zinc, silver, cadmium, arsenic,S.Z. Mikulski, &quot;Late-Hercynian gold-bearing arsenic-polymetallic mineralization within Saxothuringian zone in the Polish Sudetes, Northeast Bohemian Massif&quot;. In: &quot;Mineral Deposit at the Beginning of the 21st Century&quot;, A. Piestrzyński et al. (eds). Swets &amp; Zeitinger Publishers [ (Google books)]. lead, gold, methane, iron ore, limestone, marl, marble, and basalt. Historically, also uranium used to be mined.[ WISE - Nuclear issues information service]  In post-communist times, however, the outdated nature of many facilities has led to environmental problems and substantial transition away from the resource-based to service-based economy.  {|class=&quot;wikitable&quot; |+'''Annual production of minerals in Silesia''' |- !Mineral Name !Production (tonnes) !Reference |- |Bituminous coal |95,000,000 | |- |Copper |571,000 |[ Copper: World Smelter Production, By Country] |- |Zinc |160,000 |[ Zinc: World Smelter Production, By Country] |- |Silver |1,200 |[ Silver: World Mine Production, By Country] |- |Cadmium |500 |[ Cadmium: World Refinery Production, By Country] |- |Lead |70,000 |[ Lead: World Refinery Production, By Country] |}  The region also has a thriving agricultural sector, which produces cereals (wheat, rye, barley, oats, corn), potatoes, rapeseed, sugar beets and others. Milk production is well developed. The Opole Silesia has for decades occupied the top spot in Poland for their indices of effectiveness of agricultural land use.[ Web site of the Opole regional government containing the current statistics (in Polish)]  Mountainous parts of southern Silesia feature many significant and attractive tourism destinations (e.g., Karpacz, Szczyrk, Wisła).  Silesia is generally well forested. This is because greenness is generally highly desirable by the local population, particularly in the highly industrialized parts of Silesia.    ==Demographics== Modern Silesia is inhabited by Poles, Germans, Czechs and Silesians. The last Polish census of 2002 showed that the Silesians are the largest national minority in Poland, Germans being the second; both groups are located mostly in Upper Silesia. The Czech part of Silesia is inhabited by Czechs, Moravians, Silesians and Poles.  Before the Second World War, Silesia was inhabited mostly by Germans and Poles, in addition to German and Polish Jews and Czechs. In 1905, a census showed that 75% of the population were Germans and 25% Poles. Most Jews were murdered in the Holocaust in the German concentration camps. The vast majority of Germans fled or were expelled from Silesia during and after World War II. Most German Silesians and their descendants live today in the territory of the Federal Republic of Germany, many of them working as miners in the Ruhr area, like their ancestors did in the Silesian mines. In order to smooth their integration into West German society after 1945, they were organized into officially recognized organisations, like the Landsmannschaft Schlesien, financed from the federal German budget. One of its most notable but controversial spokesmen was the CDU politician Herbert Hupka. The prevailing public opinion in Germany is that these organisations will achieve reconciliation with the Polish Silesians, which is gradually occurring. Many of the pre-war Germanised Slavic Silesians living in Upper Silesia have remained culturally bound to and have sought work in the Federal Republic of Germany after 1990, along with their ethnic German Silesian countrymen.  Silesia is perceived by many inhabitants as a distinct region with its own culture.T. Kamusella, Tomasz&quot;Silesia: Doing It Our Way&quot;, Transitions Online, 14 November 2005 Also stereotyping of Silesians and by Silesians themselves is common.Tomasz Kamusella, &quot;The Upper Silesians' Stereotypical Perception of the Poles and the Germans&quot;, East European Quarterly, Vol. 33, 1999  ==Cities== The following table lists the cities in Silesia with a population greater than 100,000 (2006) (with German names in italics): {| cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; style=&quot;margin: 0 0 1em 1em; text-align:center; width:150px; float:right;&quot; |- |center |- |Wrocław |- |center |- |Ostrava  |- |center |- |Katowice |- |center |- |Bielsko-Biała |- |center |- |Opole |- |center |- |Görlitz |}  {| class=&quot;wikitable&quot; style=&quot;margin:auto;&quot; |- !style=&quot;width:1%;&quot;| !style=&quot;width:1%;&quot;| !style=&quot;width:12%;&quot;| Name !style=&quot;width:8%;&quot;| Population !style=&quot;width:8%;&quot;| Area !style=&quot;width:17%;&quot;| Administrative !style=&quot;width:4%;&quot;| Country |- style=&quot;text-align:center;&quot; || 1 || 25px || style=&quot;text-align:left;&quot;| '''Wrocław''' (''Breslau'')|| style=&quot;text-align:center;&quot;| 632,162 || style=&quot;text-align:center;&quot;| 293&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Lower Silesian V. || 33px |- style=&quot;text-align:center;&quot; || 2 || 25px || style=&quot;text-align:left;&quot;| '''Ostrava''' *(''Ostrau'')|| style=&quot;text-align:center;&quot;| 336,556 || style=&quot;text-align:center;&quot;| 214&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Moravian-Silesian R. || 33px |- style=&quot;text-align:center;&quot; || 3 || 25px || style=&quot;text-align:left;&quot;| '''Katowice''' (''Kattowitz'')|| style=&quot;text-align:center;&quot;| 317,220 || style=&quot;text-align:center;&quot;| 165&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 4 || 25px || style=&quot;text-align:left;&quot;| '''Gliwice''' (''Gleiwitz'')|| style=&quot;text-align:center;&quot;| 199,451 || style=&quot;text-align:center;&quot;| 134&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 5 || 25px || style=&quot;text-align:left;&quot;| '''Bytom''' (''Beuthen'')|| style=&quot;text-align:center;&quot;| 187,943 || style=&quot;text-align:center;&quot;| 69&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 6 || 25px || style=&quot;text-align:left;&quot;| '''Zabrze''' (''Hindenburg O.S''.)|| style=&quot;text-align:center;&quot;| 191,247 || style=&quot;text-align:center;&quot;| 80&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 7 || 48px || style=&quot;text-align:left;&quot;| '''Bielsko-Biała''' * (''Bielitz-Biala'')|| style=&quot;text-align:center;&quot;|176,864 || style=&quot;text-align:center;&quot;| 125&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 8 || 25px || style=&quot;text-align:left;&quot;| '''Ruda Śląska''' || style=&quot;text-align:center;&quot;| 146,658 || style=&quot;text-align:center;&quot;| 78&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 9 || 25px || style=&quot;text-align:left;&quot;| '''Rybnik''' || style=&quot;text-align:center;&quot;| 141,580 || style=&quot;text-align:center;&quot;| 148&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 10 || 25px || style=&quot;text-align:left;&quot;| '''Tychy''' (''Tichau'')|| style=&quot;text-align:center;&quot;| 131,153 || style=&quot;text-align:center;&quot;| 82&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 11 || 25px || style=&quot;text-align:left;&quot;| '''Opole''' (''Oppeln'')|| style=&quot;text-align:center;&quot;| 128,268 || style=&quot;text-align:center;&quot;| 97&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Opole Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 12 || 25px || style=&quot;text-align:left;&quot;| '''Wałbrzych''' (''Waldenburg'')|| style=&quot;text-align:center;&quot;| 126,465 || style=&quot;text-align:center;&quot;| 85&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Lower Silesian V. || 33px |- style=&quot;text-align:center;&quot; || 13 || 25px || style=&quot;text-align:left;&quot;| '''Zielona Góra''' (''Grünberg'')|| style=&quot;text-align:center;&quot;| 118,221 || style=&quot;text-align:center;&quot;| 58&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Lubusz Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 14 || 25px || style=&quot;text-align:left;&quot;| '''Chorzów''' (''Königshütte'')|| style=&quot;text-align:center;&quot;| 114,686 || style=&quot;text-align:center;&quot;| 33&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Silesian Voivodeship || 33px |- style=&quot;text-align:center;&quot; || 15 || 25px || style=&quot;text-align:left;&quot;| '''Legnica''' (''Liegnitz'')|| style=&quot;text-align:center;&quot;| 105,750|| style=&quot;text-align:center;&quot;| 56&amp;nbsp;km² || style=&quot;text-align:center;&quot;| Lower Silesian V. || 33px |}* Only part in Silesia  