Labor turmoil in 1980 led to the formation of the independent trade union "Solidarity" that over time became a political force and by 1990 had swept parliamentary elections and the presidency. A "shock therapy" program during the early 1990s enabled the country to transform its economy into one of the most robust in Central Europe, but Poland currently suffers low GDP growth and high unemployment.
Solidarity suffered a major defeat in the 2001 parliamentary elections when it failed to elect a single deputy to the lower house of Parliament, and the new leaders of the Solidarity Trade Union subsequently pledged to reduce the Trade Union's political role.
Poland joined NATO in 1999 and the European Union in 2004.
Polish is the official language of Poland and the main representative of the Lechitic branch of the West Slavic languages. It originated in the areas of present-day Poland from several local Western Slavic dialects, most notably those spoken in Greater Poland and Lesser Poland.
The Polish language was once the primary language used in various regions of Central and Eastern Europe, mostly due to the political, cultural, scientific and military influence of the Polish-Lithuanian Commonwealth.
Although no longer having as great an influence outside of Poland, due in part to the dominance of the Russian language, it is still sometimes spoken or at least understood in western border areas of Ukraine, Belarus and Lithuania as a second language.