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Il y a 12 heures · Gold, silver, iron (as meteoric iron), lead, and brass were likewise in use before the first known appearance of bronze in the fifth millennium BCE. Subsequent developments include the production of early forms of steel; the discovery of sodium —the first light metal —in 1809; the rise of modern alloy steels ; and, since the end of World War II, the development of more sophisticated alloys.
Il y a 12 heures · Recorded December 8, 1941. Franklin Delano Roosevelt [a] (January 30, 1882 – April 12, 1945), commonly known by his initials FDR, was an American politician who served as the 32nd president of the United States from 1933 until his death in 1945. The longest serving U.S. president, he is the only president to have served more than two terms.
Il y a 12 heures · Simone de Beauvoir and Jean-Paul Sartre in Beijing, 1955. Jean-Paul Charles Aymard Sartre (/ ˈ s ɑːr t r ə /, US also / ˈ s ɑːr t /; French:; 21 June 1905 – 15 April 1980) was a French philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic, considered a leading figure in 20th-century French philosophy and Marxism.
