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A timeline of United States inventions (1890–1945) encompasses the innovative advancements of the United States within a historical context, dating from the Progressive Era to the end of World War II, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War; Timeline of United States inventions (after ...
March 4, 1901 – President McKinley begins second term; Roosevelt becomes the 25th vice president. September 6, 1901 – McKinley is shot, in Buffalo, New York.; September 14, 1901 – President McKinley dies, Vice President Roosevelt becomes the 26th president [1]
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
Printable version; In other projects ... List of science timelines; The year 1900 in science and technology involved some significant events, ...
Brief History of Electronics Timeline ; Date Invention/Discovery Inventor(s) 1900: Old quantum theory: Planck 1905: Theory of relativity: Einstein 1918: Atomic transmutation: Rutherford 1932: Neutron: Chadwick 1932: Particle accelerator: Cockcroft and Walton 1935: Scanning electron microscope: Knoll 1937: Xerography: Carlson 1937: Oscilloscope ...
Printable version; In other projects ... Timeline of United States history (1900–1929) ... U.S. Senator from Iowa from 1895 to 1900 (born 1825) August 2 ...
For a timeline of events prior to 1501, see 15th century § Events; For a timeline of events from 1501 to 1600, see 16th century § Significant events; For a timeline of events from 1601 to 1700, see Timeline of the 17th century; For a timeline of events from 1701 to 1800, see Timeline of the 18th century
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