Poland

Poland ( ), officially the Republic of Poland (, ), is a country in Central Europe, situated between the Baltic Sea in the north and two mountain ranges (the Sudetes and Carpathian Mountains) in the south. Bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine and Belarus to the east; and the Baltic Sea, Kaliningrad Oblast (a Russian exclave) and Lithuania to the north. The total area of Poland is , making it the 69th largest country in the world and the 9th largest in Europe. With a population of over 38.5 million people, Poland is the 34th most populous country in the world, the 8th most populous country in Europe and the sixth most populous member of the European Union, as well as the most populous post-communist member of the European Union. Poland is a unitary state divided into 16 administrative subdivisions, and its capital and largest city is Warsaw. Other metropolises include Kraków, Wrocław, Poznań, Gdańsk and Szczecin—the country's largest urban agglomeration is the Silesian Metropolis.
The establishment of a Polish state can be traced back to 966, when Mieszko I, ruler of a territory roughly coextensive with that of present-day Poland, converted to Christianity. The Kingdom of Poland was founded in 1025, and in 1569 it cemented a longstanding political association with the Grand Duchy of Lithuania by signing the Union of Lublin. This union formed the Polish–Lithuanian Commonwealth, one of the largest and most populous countries of 16th and 17th century Europe. The Commonwealth ceased to exist in the years 1772–95, when its territory was partitioned among Prussia, the Russian Empire, and Austria. Poland regained its independence (as the Second Polish Republic) at the end of World War I, in 1918.
In September 1939, World War II started with the invasions of Poland by Nazi Germany and the Soviet Union (as part of the Molotov–Ribbentrop Pact). More than six million Polish citizens died in the war. The borders of Poland were shifted westwards according to the Potsdam Conference in the aftermath of World War II. After the war, with the backing of the Soviet Union, a communist puppet government was formed, and after a falsified referendum in 1946, it took control of the country—turning Poland into a satellite state of the Soviet Union (as the People's Republic of Poland). During the Revolutions of 1989 Poland's Communist government was overthrown and Poland adopted a new constitution establishing itself as a democracy. Despite the large number of casualties and destruction the country experienced during World War II, the country managed to preserve much of its cultural wealth. There are 14 heritage sites inscribed on the UNESCO World Heritage and 54 Historical Monuments and many objects of cultural heritage in Poland.
Since the beginning of the transition to a primarily market-based economy that took place in the early 1990s, Poland has achieved a "very high" ranking on the Human Development Index, as well as gradually improving economic freedom. Poland is a democratic country with an advanced high-income economy, a high quality of life and a very high standard of living. Moreover, the country is visited by nearly 16 million tourists every year (2013), which makes it one of the most visited countries in the world. Poland is the eighth largest economy in the European Union and among the fastest growing European economies. Furthermore, according to the Global Peace Index for 2014, Poland is one of the safest countries in the world to live in.
The origin of the name "Poland" derives from a West Slavic tribe of Polans ("Polanie") that inhabited the Warta River basin of the historic Greater Poland region in the 8th century. The origin of the name "Polanie" itself derives from the western Slavic word "pole" (field). In some foreign languages such as Hungarian, Lithuanian, Persian and Turkish the exonym for Poland is Lechites ("Lechici"), which derives from the name of a semi-legendary ruler of Polans, Lech I.
Historians have postulated that throughout Late Antiquity, many distinct ethnic groups populated the regions of what is now Poland. The ethnicity and linguistic affiliation of these groups have been hotly debated; the time and route of the original settlement of Slavic peoples in these regions lacks written records and can only be defined as fragmented.
The most famous archaeological find from the prehistory and protohistory of Poland is the Biskupin fortified settlement (now reconstructed as an open-air museum), dating from the Lusatian culture of the early Iron Age, around 700 BC. The Slavic groups who would form Poland migrated to these areas in the second half of the 5th century AD. Up until the creation of Mieszko's state and his subsequent conversion to Christianity in 966 AD, the main religion of Slavic tribes that inhabited the geographical area of present-day Poland was Slavic paganism. With the Baptism of Poland the Polish rulers accepted Christianity and the religious authority of the Roman Church. However, the transition from paganism was not a smooth and instantaneous process for the rest of the population as evident from the pagan reaction of the 1030s.
Poland began to form into a recognizable unitary and territorial entity around the middle of the 10th century under the Piast dynasty. Poland's first historically documented ruler, Mieszko I, accepted Christianity with the Baptism of Poland in 966, as the new official religion of his subjects. The bulk of the population converted in the course of the next few centuries. In 1000, Boleslaw the Brave, continuing the policy of his father Mieszko, held a Congress of Gniezno and created the metropolis of Gniezno and the dioceses of Kraków, Kołobrzeg, and Wrocław. However, the pagan unrest led to the transfer of the capital to Kraków in 1038 by Casimir I the Restorer.
In 1109, Prince Bolesław III Wrymouth defeated the King of Germany Henry V at the Battle of Hundsfeld, stopping the German march into Poland. The significance of the event was documented by Gallus Anonymus in his 1118 chronicle. In 1138, Poland fragmented into several smaller duchies when Bolesław divided his lands among his sons. In 1226, Konrad I of Masovia, one of the regional Piast dukes, invited the Teutonic Knights to help him fight the Baltic Prussian pagans; a decision which led to centuries of warfare with the Knights. In 1264, the Statute of Kalisz or the General Charter of Jewish Liberties introduced numerous right for the Jews in Poland, leading to a nearly autonomous "nation within a nation".