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The 1920s (pronounced "nineteen-twenties" often shortened to the "' 20s" or the "Twenties") was a decade that began on January 1, 1920, and ended on December 31, 1929. . Primarily known for the economic boom that occurred in the Western World following the end of World War I (1914–1918), the decade is frequently referred to as the "Roaring Twenties" or the "Jazz Age" in America and Western ...
Lionel C. Sternberger is believed to have invented the "cheese hamburger" in the 1920s in the Northeast portion of Los Angeles County. The earliest year attributed to the invention of the cheeseburger by Sternberger is in 1924, while others claimed that he invented it as late as 1926.
Genetic evidence from body lice suggests a range of dates centering over 100 thousand years ago. [28] The first bone scrapers appropriate for scraping hides to make supple leather were found in Morocco dating to 90–120,000 years ago. [29] [30] 164 kya – 47 kya: Heat treating of stone blades in South Africa. [31]
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
The 24-year-old from Brooklyn was the first to use a new technology called digitalization to capture images. Four decades later, we carry his invention in our pockets on our phones. Courtesy of ...
While by the middle of the decade prosperity was widespread, with the second half of the decade known, especially in Germany, as the "Golden Twenties", [15] the decade was coming fast to an end. The Wall Street Crash of 1929 ended the era, as the Great Depression brought years of hardship worldwide.
The 1920s (pronounced "nineteen-twenties" often shortened to the "' 20s" or the "Twenties") was a decade that began on January 1, 1920, and ended on December 31, 1929. . Primarily known for the economic boom that occurred in the Western World following the end of World War I (1914–1918), the decade is frequently referred to as the "Roaring Twenties" or the "Jazz Age" in America and Western ...
Pages in category "20th-century inventions" The following 127 pages are in this category, out of 127 total. This list may not reflect recent changes. A.