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Quantum mechanics
The discovery and development of quantum mechanics occurred primarily in the early 20th century, from about 1900 to 1930.Many scientists have made many contributions to this, laying the foundation for the development of quantum mechanics -
The beginning of the 20th Century
According to the calendar we use, the 1st Century included the years 1-100 (there was no year zero), and the 2nd Century, the years 101-200. -
Gustav Mahler: Symphony No. 6
Gustav Mahler composed his sixth symphony at a prosperous time in his life, after he’d married the Austrian-American composer, author, and socialite Alma Schindler, and had his second child. The four-movement work is no less doused in uncertainty and angst, and is one of Mahler’s greatest masterpieces, praised by fellow 20th-century great Alban Berg as being the “only one Sixth, notwithstanding [Beethoven’s] ‘Pastoral’.” Better than Beethoven? Strong praise indeed. -
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World War I
World War I or the First World War was a global conflict between two coalitions: the Allies and the Central Powers. Fighting took place throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. One of the deadliest wars in history, it resulted in an estimated 9 million soldiers dead and 23 million wounded, plus up to 8 million civilian deaths from numerous causes including genocide. -
The Treaty of Versailles
The Treaty of Versailles was one of the peace treaties at the end of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1919, exactly five years after the assassination of Archduke Franz Ferdinand. The other Central Powers on the German side of World War I were dealt with in separate treaties. -
Romeo and Juliet (Prokofiev)
Romeo and Juliet,Op. 64, is a ballet by Sergei Prokofiev based on William Shakespeare's play Romeo and Juliet. First composed in 1935, it was substantially revised for its Soviet premiere in early 1940. Prokofiev made from the ballet three orchestral suites and a suite for solo piano. -
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Bebop and modern jazz
The emergence of bebop marked a major shift in jazz, emphasizing fast rhythms and complex harmonies, and was represented by such figures as Charlie Parker and Dizzy Gillespie. in the 1950s, the development of cool jazz, hard bop, and free jazz was furthered by the likes of Miles Davis and John Coltrane. -
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Atomic bombings of Hiroshima and Nagasaki
The United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki. The bombings killed between 129,000 and 226,000 people, most of whom were civilians, and remain the only use of nuclear weapons in an armed conflict. Japan surrendered to the Allies on 15 August. The Japanese government signed the instrument of surrender on 2 September, effectively ending the war. -
Dissolution of the Soviet Union
The dissolution of the Soviet Union was formally enacted on December 26, 1991, as a result of the declaration no. 142-Н of the Supreme Soviet of the Soviet Union, acknowledging the independence of the erstwhile Soviet republics and creating the Commonwealth of Independent States – although five of the signatories ratified it much later or not at all. -
The end of the 20th Century
The first century comprises the years AD 1 through AD 100. The second century began with AD 101 and continued through AD 200. By extrapolation, the 20th century comprises the years AD 1901-2000.