The Potsdam Agreement ( German : Potsdamer Abkommen ) was the agreement among three of the Allies of World War II : the United Kingdom , the United States , and the Soviet Union after the war ended in Europe that was signed on 1 August 1945 and it was published the next day. A product of the Potsdam Conference , it concerned the military occupation and reconstruction of Germany , its border , and the entire European Theatre of War territory. It also addressed Germany's demilitarisation , reparations , the prosecution of war criminals and the mass expulsion of ethnic Germans from various parts of Europe. France was not invited to the conference but formally remained one of the powers occupying Germany.
68-549: Silesian as an adjective can mean anything from or related to Silesia . As a noun, it refers to an article, item, or person of or from Silesia. Silesian may also refer to: Silesia Silesia (see names below ) is a historical region of Central Europe that lies mostly within Poland , with small parts in the Czech Republic and Germany . Its area is approximately 40,000 km (15,400 sq mi), and
136-823: A Final German Peace Treaty was held. The Allies had acknowledged the legitimacy of the Polish Provisional Government of National Unity , which was about to form a Soviet satellite state . Urged by Stalin, the UK and the US gave in to put the German territories east of the Oder–Neisse line from the Baltic coast west of Świnoujście up to the Czechoslovak border "under Polish administration"; allegedly confusing
204-580: A border on the Lusatian Neisse. The Allied resolution on the "orderly transfer" of German population became the legitimation of the expulsion of Germans from the nebulous parts of Central Europe , if they had not already fled from the advancing Red Army. The expulsion of ethnic Germans by the Poles concerned, in addition to Germans within areas behind the 1937 Polish border in the West (such as in most of
272-738: A constituent part of the Bohemian Crown Lands under the Holy Roman Empire , which passed to the Austrian Habsburg monarchy in 1526; however, a number of duchies remained under the rule of Polish dukes from the houses of Piast, Jagiellon and Sobieski as formal Bohemian fiefdoms, some until the 17th–18th centuries. As a result of the Silesian Wars , the region was annexed by the German state of Prussia from Austria in 1742. After World War I , when
340-594: A majority ethnic Polish population, was awarded to Poland, becoming 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 and Trans-Olza ), although most of Cieszyn and territory to
408-576: A network of forced labour camps solely for Poles ( Polenlager ), subcamps of prisons, POW camps and of the Gross-Rosen and Auschwitz concentration camps. The Potsdam Conference of 1945 defined the Oder-Neisse line as the border between Germany and Poland, pending a final peace conference with Germany which eventually never took place. At the end of WWII, Germans in Silesia fled from
476-604: A period of intense immigration from Silesia to the United States), considered Silesian as a geographical (not ethnic) term, denoting the inhabitants of Silesia. It is also mentioned the existence of both Polish Silesian and German Silesian dialects in that region. Modern Silesia is inhabited by Poles , Silesians , Germans , and Czechs . Germans first came to Silesia during the Late Medieval Ostsiedlung . The last Polish census of 2011 showed that
544-644: A result of immigration from German-speaking states of the Holy Roman Empire . The first granting of municipal privileges in Poland took place in the region, with the granting of rights for Złotoryja by Henry the Bearded. Medieval municipal rights modeled after Lwówek Śląski and Środa Śląska , both established by Henry the Bearded, became the basis of municipal form of government for several cities and towns in Poland, and two of five local Polish variants of medieval town rights. The Book of Henryków , which contains
612-443: 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. Mountainous parts of southern Silesia feature many significant and attractive tourism destinations (e.g., Karpacz , Szczyrk , Wisła ). Silesia
680-564: Is different from Upper Silesia in many respects as its population was predominantly German-speaking from around the mid 19th century until 1945–48. In the fourth century BC from the south, through the Kłodzko Valley , the Celts entered Silesia, and settled around Mount Ślęża near modern Wrocław , Oława and Strzelin . Germanic Lugii tribes were first recorded within Silesia in the 1st century BC. West Slavs and Lechites arrived in
748-466: Is generally well forested. This is because greenness is generally highly desirable by the local population, particularly in the highly industrialized parts of Silesia. Silesia has been historically diverse in every aspect. Nowadays, the largest part of Silesia is located in Poland; it is often cited as one of the most diverse regions in that country. The United States Immigration Commission, in its Dictionary of Races or Peoples (published in 1911, during
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#1732764779883816-653: Is nearing extinction due to its speakers' expulsion. The names of Silesia in different languages most likely share their etymology— Polish : Śląsk [ɕlɔ̃sk] ; German : Schlesien [ˈʃleːzi̯ən] ; Czech : Slezsko [ˈslɛsko] ; Lower Silesian : Schläsing ; Silesian : Ślōnsk [ɕlonsk] ; Lower Sorbian : Šlazyńska [ˈʃlazɨnʲska] ; Upper Sorbian : Šleska [ˈʃlɛska] ; Slovak : Sliezsko ; Kashubian : Sląsk ; Latin , Spanish and English: Silesia ; French: Silésie ; Dutch : Silezië ; Italian : Slesia . The names all relate to
884-730: Is now part of the Czech Republic, forming part of the Moravian-Silesian Region and the northern part of the Olomouc Region . Germany retains the Silesia-Lusatia region ( Niederschlesien-Oberlausitz or Schlesische Oberlausitz ) west of the Neisse , which is part of the federal state of Saxony . The region was affected by the 1997 , 2010 and 2024 Central European floods. Most of Silesia
952-680: 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
1020-852: The Sudetenland region where they formed a majority, from linguistic enclaves in central Bohemia and Moravia , as well as from the city of Prague . Though the Potsdam Agreement referred only to Poland, Czechoslovakia and Hungary , expulsions also occurred in Romania , where the Transylvanian Saxons were deported and their property seized, and in Yugoslavia . In the Soviet territories, Germans were expelled from northern East Prussia ( Oblast Kaliningrad ) but also from
1088-647: The Bohemian Crown which was part of the Holy Roman Empire; however, a number of duchies remained under the rule of the Polish dukes from the houses of Piast, Jagiellon and Sobieski as formal Bohemian fiefdoms , some until the 17th–18th centuries. In 1469, sovereignty over the region passed to Hungary , and in 1490, it returned to Bohemia. In 1526 Silesia passed with the Bohemian Crown to
1156-683: 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
1224-657: The Diocese of Kraków . The Duchy of Krosno Odrzańskie ( Crossen ) was inherited by the Margraviate of Brandenburg in 1476 and with the renunciation of King Ferdinand I and the estates of Bohemia in 1538, became an integral part of Brandenburg. From 1645 until 1666, the Duchy of Opole and Racibórz was held in pawn by the Polish House of Vasa as dowry of the Polish queen Cecylia Renata . In 1742, most of Silesia
1292-577: The Habsburg monarchy . In the 15th century, several changes were made to Silesia's borders. Parts of the territories that had been transferred to the Silesian Piasts in 1178 were bought by the Polish kings in the second half of the 15th century (the Duchy of Oświęcim in 1457; the Duchy of Zator in 1494). The Bytom area remained in the possession of the Silesian Piasts, though it was a part of
1360-732: The Lusatian Neisse and the Glatzer Neisse rivers. The proposal of an Oder- Bober - Queis line was rejected by the Soviet delegation. The cession included the former Free City of Danzig and the seaport of Stettin on the mouth of the Oder River ( Szczecin Lagoon ), vital for the Upper Silesian Industrial Region . Post-war, 'Germany as a whole' would consist solely of aggregate territories of
1428-659: The Moscow Declaration of October 1943 have no particular geographical localization. The Three Governments reaffirm their intention to bring these criminals to swift and sure justice. They hope that the negotiations in London will result in speedy agreement being reached for this purpose, and they regard it as a matter of great importance that the trial of these major criminals should begin at the earliest possible date. The first list of defendants will be published before 1st September. [t]he three Governments have also charged
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#17327647798831496-963: The Pacific Theatre of War , the Potsdam Conference issued the Potsdam Declaration , the Proclamation Defining Terms for Japanese Surrender (26 July 1945) wherein the Western Allies (UK, US, USSR) and the Nationalist China of General Chiang Kai-shek asked Japan to surrender or be destroyed. Already during the Potsdam Conference, on 30 July 1945, the Allied Control Council was constituted in Berlin to execute
1564-650: The Protocol of the Proceedings, August 1, 1945 , signed at Cecilienhof Palace in Potsdam . The signatories were General Secretary Joseph Stalin , President Harry S. Truman , and Prime Minister Clement Attlee , who, as a result of the British general election of 1945 , had replaced Winston Churchill as the UK's representative. The three powers also agreed to invite France and China to participate as members of
1632-544: 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
1700-620: The Treaty of Moscow (1970) and the Treaty of Warsaw (1970) ). In the Potsdam Agreement (Berlin Conference) the Allies (UK, USSR, US) agreed on the following matters: The Three Governments have taken note of the discussions which have been proceeding in recent weeks in London between British, United States, Soviet and French representatives with a view to reaching agreement on the methods of trial of those major war criminals whose crimes under
1768-683: The 1921 Upper Silesia plebiscite . It further affected the German minority living within the territory of the former Second Polish Republic in Greater Poland , eastern Upper Silesia, Chełmno Land and the Polish Corridor with Danzig. The Germans in Czechoslovakia (34% of the population of the territory of what is now the Czech Republic), known as Sudeten Germans but also Carpathian Germans , were expelled from
1836-795: The 1970s under the People's Republic of Poland . During this period, Silesia became one of the world's largest producers of coal, with a record tonnage in 1979. Coal mining declined during the next two decades, but has increased again following the end of Communist rule. The 41 coal mines in Silesia are mostly part of the Upper Silesian Coal Basin , which lies in the Silesian Upland. The coalfield has an area of about 4,500 km (1,700 sq mi). Deposits in Lower Silesia have proven to be difficult to exploit and
1904-457: The 19th century and the early 20th century can be found in Table 2.: (67.2%) (62.0%) (62.6%) (62.1%) (58.6%) (58.1%) (58.1%) (58.6%) (58.7%) (57.3%) (59.1%) Potsdam Agreement Executed as a communiqué, the agreement was not a peace treaty according to international law , although it created accomplished facts. It was superseded by the Treaty on
1972-533: The Allied Control Council; in particular resisting all proposals to establish common policies and institutions across Germany as a whole (for example France separated Saarland from Germany to establish its protectorate on 17 December 1947), and anything that they feared might lead to the emergence of an eventual unified German government. After the end of World War II in Europe (1939–1945), and
2040-643: The Allied resolutions (the "Four Ds"): The northern half of the German province of East Prussia , occupied by the Red Army during its East Prussian Offensive followed by its evacuation in winter 1945, had already been incorporated into Soviet territory as the Kaliningrad Oblast . The Western Allies promised to support the annexation of the territory north of the Braunsberg – Goldap line when
2108-631: The Council of Foreign Ministers established to oversee the agreement. The Provisional Government of the French Republic accepted the invitation on August 7, with the key reservation that it would not accept a priori any commitment to the eventual reconstitution of a central government in Germany. James F. Byrnes wrote "we specifically refrained from promising to support at the German Peace Conference any particular line as
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2176-466: The Council of Foreign Ministers with the task of preparing peace treaties for Bulgaria , Finland , Hungary and Romania . The conclusion of Peace Treaties with recognized democratic governments in these States will also enable the three Governments to support applications from them for membership of the United Nations. The three Governments agree to examine each separately in the near future in
2244-549: The Czech city of Ostrava and the German city of Görlitz are within Silesia's borders. Silesia's borders and national affiliation have changed over time, both when it was a hereditary possession of noble houses and after the rise of modern nation-states , resulting in an abundance of castles , especially in the Jelenia Góra valley . The first known states to hold power in Silesia were probably those of Greater Moravia at
2312-407: The Final Settlement with Respect to Germany signed on 12 September 1990. As De Gaulle had not been invited to the Conference, the French resisted implementing the Potsdam Agreements within their occupation zone. In particular, the French refused to resettle any expelled Germans from the east. Moreover, the French did not accept any obligation to abide by the Potsdam Agreement in the proceedings of
2380-729: The Holocaust and had returned to Silesia. The newly formed Polish United Workers' Party created a Ministry of the Recovered Territories that claimed half of the available arable land for state-run collectivized farms. Many of the new Polish Silesians who resented the Germans for their invasion in 1939 and brutality in occupation now resented the newly formed Polish communist government for their population shifting and interference in agricultural and industrial affairs. The administrative division of Silesia within Poland has changed several times since 1945. Since 1999, it has been divided between Lubusz Voivodeship , Lower Silesian Voivodeship , Opole Voivodeship , and Silesian Voivodeship . Czech Silesia
2448-424: 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 . Silesia is a resource-rich and populous region. Since the middle of the 18th century, coal has been mined. The industry had grown while Silesia was part of Germany, and peaked in
2516-426: The Old Polish words ślęg [ɕlɛŋk] or śląg [ɕlɔŋk] , which means dampness, moisture, or humidity. They disagree with the hypothesis of an origin for the name Śląsk from the name of the Silings tribe, an etymology preferred by some German authors. In Polish common usage, "Śląsk" refers to traditionally Polish Upper Silesia and today's Silesian Voivodeship , but less to Lower Silesia, which
2584-499: The Pious at the Battle of Legnica , which took place at Legnickie Pole near the city of Legnica . Upon the death of Orda Khan , the Mongols chose not to press forward further into Europe, but returned east to participate in the election of a new Grand Khan (leader). Between 1289 and 1292, Bohemian king Wenceslaus II became suzerain of some of the Upper Silesian duchies. Polish monarchs had not renounced their hereditary rights to Silesia until 1335. The province became part of
2652-402: The Poles and Czechs regained their independence, the easternmost part of Upper Silesia became again part of Poland by the decision of the Entente Powers after insurrections by Poles and the Upper Silesian plebiscite , while the remaining former Austrian parts of Silesia were divided between Czechoslovakia and Poland. During World War II , as a result of German occupation the entire region
2720-465: The Second World War, Silesia was inhabited mostly by Germans, with Poles a large minority, forming a majority in Upper Silesia . Silesia was also the home of Czech and Jewish minorities. The German population tended to be based in the urban centres and in the rural areas to the north and west, whilst the Polish population was mostly rural and could be found in the east and in the south. Ethnic structure of Prussian Upper Silesia ( Opole regency) during
2788-412: The Silesian Piasts, although their population was primarily Vistulan and not of Silesian descent. Walloons came to Silesia as one of the first foreign immigrant groups in Poland , probably settling in Wrocław since the 12th century, with further Walloon immigrants invited by Duke Henry the Bearded in the early 13th century. Since the 13th century, German cultural and ethnic influence increased as
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2856-465: The Silesian mountain region (Hirschberg, Schneekoppe). After World War I, a part of Silesia, 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. It resulted in 60% of votes being cast for Germany and 40% for Poland. Following the third Silesian uprising (1921), however, the easternmost portion of Upper Silesia (including Katowice), with
2924-494: The Silesians are the largest ethnic or 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 . In the early 19th century the population of the Prussian part of Silesia was between 2/3 and 3/4 German-speaking, between 1/5 and 1/3 Polish-speaking, with Sorbs , Czechs , Moravians and Jews forming other smaller minorities (see Table 1. below). Before
2992-400: The area's unprofitable mines were closed in 2000. In 2008, an estimated 35 billion tonnes of lignite reserves were found near Legnica, making them some of the largest in the world. From the fourth century BC, iron ore has been mined in the upland areas of Silesia. The same period had lead, copper, silver, and gold mining. Zinc, cadmium, arsenic, and uranium have also been mined in
3060-532: The battle ground, assuming they would be able to return when the war was over. However, they could not return, and those who had stayed were expelled and a new Polish population, including people displaced from former Eastern Poland annexed by the Soviet Union and from Central Poland, joined the surviving native Polish inhabitants of the region. After 1945 and in 1946, nearly all of the 4.5 million Silesians of German descent fled, or were interned in camps and expelled, including some thousand German Jews who survived
3128-399: The decisions of the earlier Tehran , Casablanca and Yalta Conferences , the Allies assumed supreme authority over Germany by the Berlin Declaration of June 5, 1945. At the Potsdam Conference the Western Allies were presented with Stalin 's fait accompli awarding Soviet-occupied Poland the river Oder as its western border, placing the entire Soviet Occupation Zone east of it (with
3196-421: The earliest known sentence written in the Polish language, as well as a document which contains the oldest printed text in Polish, were created in Henryków and Wrocław in Silesia, respectively. In 1241, the Mongols conducted their first invasion of Poland , causing widespread panic and mass flight. They looted much of the region and defeated the combined Polish, Moravian and German forces led by Duke Henry II
3264-404: The east of it went to Poland. Polish Silesia was among the first regions invaded during Germany's 1939 attack on Poland , which started World War II . One of the claimed goals of Nazi German occupation , particularly in Upper Silesia, was the extermination of those whom Nazis viewed as " subhuman ", namely Jews and ethnic Poles. The Polish and Jewish population of the then Polish part of Silesia
3332-418: The end of the 9th century and Bohemia early in the 10th century. In the 10th century, Silesia was incorporated into the early Polish state, and after its fragmentation in the 12th century it formed the Duchy of Silesia , a provincial duchy of Poland. As a result of further fragmentation, Silesia was divided into many duchies , ruled by various lines of the Polish Piast dynasty . In the 14th century, it became
3400-409: The exception of the Kaliningrad enclave), including Pomerania , most of East Prussia , and Danzig , under Polish administration. The German population who had not fled were expelled and their properties acquisitioned by the state. President Truman and the British delegations protested at these actions. The Three Power Conference took place from 17 July to 2 August 1945, in which they adopted
3468-583: The light of the conditions then prevailing, the establishment of diplomatic relations with Finland, Romania, Bulgaria, and Hungary to the extent possible prior to the conclusion of peace treaties with those countries. The Three Governments, having considered the question in all its aspects, recognize that the transfer to Germany of German populations, or elements thereof, remaining in Poland, Czechoslovakia and Hungary, will have to be undertaken. They agree that any transfers that take place should be effected in an orderly and humane manner. Moreover, towards concluding
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#17327647798833536-408: The name of a river (now Ślęza ) and mountain ( Mount Ślęża ) in mid-southern Silesia, which served as a place of cult for pagans before Christianization . Ślęża is listed as one of the numerous Pre-Indo-European topographic names in the region (see old European hydronymy ). According to some Polonists , the name Ślęża [ˈɕlɛ̃ʐa] or Ślęż [ɕlɛ̃ʂ] is directly related to
3604-401: The old Prussian province of West Prussia), the territories placed "under Polish administration" pending a Final German Peace Treaty, i.e. southern East Prussia ( Masuria ), Farther Pomerania , the New March region of the former Province of Brandenburg , the districts of the Grenzmark Posen-West Prussia , Lower Silesia and those parts of Upper Silesia that had remained with Germany after
3672-431: The population is estimated at 8,000,000. Silesia is split into two main subregions, Lower Silesia in the west and Upper Silesia in the east. Silesia has a diverse culture, including architecture , costumes , cuisine , traditions, and the Silesian language (minority in Upper Silesia). The largest city of the region is Wrocław . Silesia is situated along the Oder River, with the Sudeten Mountains extending across
3740-432: The region around the 7th century, and by the early ninth century, their settlements had stabilized. Local West Slavs started to erect boundary structures like the Silesian Przesieka and the Silesia Walls . The eastern border of Silesian settlement was situated to the west of the Bytom , and east from Racibórz and Cieszyn . East of this line dwelt a closely related Lechitic tribe, the Vistulans . Their northern border
3808-465: The region, and one of the oldest dioceses in Poland, subjugated to the Roman Catholic Archdiocese of Gniezno . Poland repulsed German invasions of Silesia in 1017 at Niemcza and in 1109 at Głogów . During the Fragmentation of Poland , Silesia and the rest of the country were divided into many smaller duchies ruled by various Silesian dukes . In 1178, parts of the Duchy of Kraków around Bytom, Oświęcim , Chrzanów , and Siewierz were transferred to
3876-464: The region. Lower Silesia features large copper mining and processing between the cities of Legnica , Głogów , Lubin , and Polkowice . In the Middle Ages, gold (Polish: złoto ) and silver (Polish: srebro ) were mined in the region, which is reflected in the names of the former mining towns of Złotoryja , Złoty Stok and Srebrna Góra . The region is known for stone quarrying to produce limestone, marl , marble, and basalt. The region also has
3944-443: The respective zones of occupation. As all former German territories east of the Oder-Neisse line were excluded from the Soviet Occupation Zone, they were consequently excluded from 'Germany as a whole'. In the course of the proceedings, and after the German state killed around 5-6 million Polish citizens during the war, Polish communists had begun to suppress the German population west of the Bóbr river to underline their demand for
4012-443: The result of the forced population shifts of 1945–48, today's inhabitants of Silesia speak the national languages of their respective countries. Previously German-speaking Lower Silesia had developed a new mixed Polish dialect and novel costumes . There is ongoing debate about whether the Silesian language , common in Upper Silesia, should be considered a dialect of Polish or a separate language. The Lower Silesian German dialect
4080-420: The southern border. The region contains many historical landmarks and UNESCO World Heritage Sites . It is also rich in mineral and natural resources, and includes several important industrial areas. The largest city and Lower Silesia's capital is Wrocław ; the historic capital of Upper Silesia is Opole . The biggest metropolitan area is the Katowice metropolitan area , the centre of which is Katowice . Parts of
4148-403: 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 Mountains 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
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#17327647798834216-458: The two main wartime centers where medical experiments were conducted on kidnapped Polish children by Nazis. Czech Silesia was occupied by Germany as part of so-called Sudetenland . In Silesia, Nazi Germany operated the Gross-Rosen concentration camp , several prisoner-of-war camps for Allied POWs (incl. the major Stalag VIII-A , Stalag VIII-B , Stalag VIII-C camps), numerous Nazi prisons and thousands of forced labour camps, including
4284-411: The western frontier of Poland." The Berlin Protocol declared: "The three heads of government reaffirm their opinion that the final delimitation of the western frontier of Poland should await the [final] peace settlement." Byrnes continues: "In the light of this history, it is difficult to credit with good faith any person who asserts that Poland's western boundary was fixed by the conferences, or that there
4352-465: Was a promise that it would be established at some particular place." Despite this, the Oder-Neisse Line was set as Poland's provisional (and therefore theoretically subject to change) western frontier in Article 8 of the Agreement but was not finalized as Poland's permanent western frontier until the 1990 German-Polish Border Treaty , having been recognized by East Germany in 1950 (in the Treaty of Zgorzelec ) and acquiesced to by West Germany in 1970 (in
4420-414: Was in the valley of the Barycz River, north of which lived the Western Polans tribe who gave Poland its name . The first known states in Silesia were Greater Moravia and Bohemia . In the 10th century, the Polish ruler Mieszko I of the Piast dynasty incorporated Silesia into the newly established Polish state . In 1000, the Diocese of Wrocław was established as the oldest Catholic diocese in
4488-491: Was seized by King Frederick II of Prussia in the War of the Austrian Succession , eventually becoming the Prussian Province of Silesia in 1815; consequently, Silesia became part of the German Empire when it was proclaimed in 1871. The Silesian capital Breslau became at that time one of the big cities in Germany. Breslau was a center of Jewish life in Germany and an important place of science (university) and industry (manufacturing of locomotives). German mass tourism started in
4556-401: Was subjected to genocide involving expulsions , mass murder and deportation to Nazi concentration camps and forced labour camps, while Germans were settled in pursuit of Lebensraum . Two thousand Polish intellectuals, politicians, and businessmen were murdered in the Intelligenzaktion Schlesien in 1940 as part of a Poland-wide Germanization program . Silesia also housed one of
4624-422: Was under control of Nazi Germany . In 1945, after World War II , most of the German-held Silesia was transferred to Polish jurisdiction by the Potsdam Agreement between the victorious Allies and became again part of Poland, although with a Soviet -installed communist regime . The small Lusatian strip west of the Oder–Neisse line , which had belonged to Silesia since 1815, became part of East Germany . As
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