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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.
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 1991), after the dissolution of the Soviet Union
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 ...
A graphical view of the Cosmic Calendar, featuring the months of the year, days of December, and the final minute. The Cosmic Calendar is a method to visualize the chronology of the universe, scaling its current age of 13.8 billion years to a single year in order to help intuit it for pedagogical purposes in science education or popular science.
In Poland during holidays on 1 and 3 May, when taking a few days of leave can result in 9-day-long holidays; this is called The Picnic (or Majówka). In Japan, golden-week lasts roughly a full week. Then, in 2007, the law was amended so that if any 2 public holidays occur both on a weekday and are separated by a day, then that intermediate day ...
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
This is a list of calendars.Included are historical calendars as well as proposed ones. Historical calendars are often grouped into larger categories by cultural sphere or historical period; thus O'Neil (1976) distinguishes the groupings Egyptian calendars (Ancient Egypt), Babylonian calendars (Ancient Mesopotamia), Indian calendars (Hindu and Buddhist traditions of the Indian subcontinent ...
Crackers trace their origin to the year 1792 when John Pearson of Newburyport, Massachusetts invented a cracker-like bread product from just flour and water that he called "pilot bread". An immediate success with sailors because of its shelf life, it also became distinctly known as a hardtack or sea biscuit for long voyages away from home while ...