The Prague Spring (Czech: Pražské jaro, Slovak: Pražská jar) was a period of political liberalization in Czechoslovakia during the era of its domination by the Soviet Union after World War II. It began on 5 January 1968, when reformist Alexander Dubček was elected the First Secretary of Communist Party of Czechoslovakia, and continued until 21 August when the Soviet Union and all members of the Warsaw Pact invaded the country with the notable exception of Romania to halt the reforms.

The Prague Spring reforms were an attempt by Dubček to grant additional rights to the citizens in an act of partial decentralization of the economy and democratization. The freedoms granted included a loosening of restrictions on the media, speech and travel. After national discussion of dividing the country into a federation of three republics, Bohemia, Moravia-Silesia and Slovakia, Dubček oversaw the decision to split into two, the Czech Republic and Slovak Republic. This was the only change that survived the end of the Prague Spring.

Prague ( /ˈprɑːɡ/; Czech: Praha pronounced [ˈpraɦa] ( listen)) is the capital and largest city of the Czech Republic and fourteenth largest city in European Union. Situated in the north-west of the country on the Vltava river, the city is home to about 1.3 million people, while its metropolitan area is estimated to have a population of nearly 2.0 million. The city has a temperate oceanic climate with warm summers and chilly winters.

Prague has been a political, cultural, and economic centre of central Europe with waxing and waning fortunes during its 1,100 year existence. Founded during the Romanesque and flourishing by the Gothic and Renaissance eras, Prague was the seat of two Holy Roman Emperors and thus then also the capital of the Holy Roman Empire. It was an important city to the Habsburg Monarchy and its Austro-Hungarian Empire and after World War I became the capital of Czechoslovakia. The city played major roles in the Protestant Reformation, the Thirty Years' War, and in modern history generally as the principal conurbation in Bohemia and Moravia whose second city is Brno.

Rafael Jeroným Kubelík (29 June 1914 – 11 August 1996) was a Czech conductor and composer.

Kubelík was born in Býchory, Bohemia, Austria-Hungary, today's Czech Republic. He was the sixth child of the Bohemian violinist Jan Kubelík, whom the younger Kubelík described as "a kind of god to me". His mother was a Hungarian countess, Anna Julie Marie Széll von Bessenyö. Kubelík studied violin with his father, and later violin, composition, and conducting at the Prague Conservatory. He graduated from the conservatory in 1933, at the age of 19; at his graduation concert he played a Paganini concerto and a composition of his own for violin and orchestra. Kubelík was also an accomplished pianist, and served as his father's piano accompanist on a tour of the United States in 1935.

In 1939, Kubelík became music director of the Brno Opera, a position he held until the Nazis shut the company down on 12 November 1941. The Nazis allowed the Czech Philharmonic to continue operating, and Kubelík became its principal conductor. (He had first conducted the Czech Philharmonic in 1934 when he was 20 years old.) In 1944, after various incidents, including one in which he declined to greet the Nazi Reichsprotektor Karl Hermann Frank with a Hitler salute — along with his refusal to conduct Wagner during the War — Kubelík "deemed it advisable to disappear from Prague and to spend a few months undercover in the countryside so as not to fall into the clutches of the SS or Gestapo".

Bedřich Smetana (Czech pronunciation: [ˈbɛdr̝ɪx ˈsmɛtana] ( listen); 2 March 1824 – 12 May 1884) was a Czech composer who pioneered the development of a musical style which became closely identified with his country's aspirations to independent statehood. He is thus widely regarded in his homeland as the father of Czech music. Internationally he is best known for his opera The Bartered Bride, for the symphonic cycle Má vlast ("My Fatherland") which portrays the history, legends and landscape of the composer's native land, and for his First String Quartet From My Life.

Smetana was naturally gifted as a pianist, and gave his first public performance at the age of six. After his conventional schooling, he studied music under Josef Proksch in Prague. His first nationalistic music was written during the 1848 Prague uprising, in which he briefly participated. After failing to establish his career in Prague, he left for Sweden, where he set up as a teacher and choirmaster in Gothenburg, and began to write large-scale orchestral works. During this period of his life Smetana was twice married; of six daughters, three died in infancy.

Barack Hussein Obama II (ⁱ/bəˈrɑːk huːˈseɪn oʊˈbɑːmə/; born August 4, 1961) is the 44th and current President of the United States. He is the first African American to hold the office. In January 2005, Obama was sworn in as a U.S. Senator in the state of Illinois. He would hold this office until November 2008, when he resigned following his victory in the 2008 presidential election.

Born in Honolulu, Hawaii, Obama is a graduate of Columbia University and Harvard Law School, where he was the president of the Harvard Law Review. He was a community organizer in Chicago before earning his law degree. He worked as a civil rights attorney in Chicago and taught constitutional law at the University of Chicago Law School from 1992 to 2004. He served three terms representing the 13th District in the Illinois Senate from 1997 to 2004.

Following an unsuccessful bid against the Democratic incumbent for a seat in the United States House of Representatives in 2000, Obama ran for the United States Senate in 2004. Several events brought him to national attention during the campaign, including his victory in the March 2004 Illinois Democratic primary for the Senate election and his keynote address at the Democratic National Convention in July 2004. He won election to the U.S. Senate in Illinois in November 2004. His presidential campaign began in February 2007, and after a close campaign in the 2008 Democratic Party presidential primaries against Hillary Rodham Clinton, he won his party's nomination. In the 2008 presidential election, he defeated Republican nominee John McCain, and was inaugurated as president on January 20, 2009. Nine months later, Obama was named the 2009 Nobel Peace Prize laureate. In April 2011, he announced that he would be running for re-election in 2012.