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  1. Between 1850 and 1930, about 5 million Germans migrated to the United States, peaking between 1881 and 1885 when a million Germans settled primarily in the Midwest. Between 1820 and 1930, 3.5 million British and 4.5 million Irish entered America. Before 1845, most Irish immigrants were Protestants.

  2. 1930: The Supersonic combusting ramjet — Frank Whittle. 1930: The Phase-contrast microscopy is invented by Frits Zernike. 1931: The electron microscope is invented by Ernst Ruska. 1933: FM radio is patented by inventor Edwin H. Armstrong. 1935: Nylon, the first fully synthetic fiber is produced by Wallace Carothers while working at DuPont.

  3. Aug 27, 2021 · Migrant laborers work in a field in Southern California in 1920. Kirn Vintage Stock/Getty Images. The 1900s . The first decades of the 20th century saw the efforts of George Washington Carver, director of agricultural research at Tuskegee Institute, whose pioneering work finding new uses for peanuts, sweet potatoes, and soybeans helped to diversify southern agriculture.

  4. Aug 12, 2022 · Shows average yearly salaries (besides room and board) for servants, the value of tenement laborers entire pay (including wages and provisions), summer and winter wages per day, and the wages earned in 300 days in Sweden for the years 1866-1900.

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    17th century economy examples united states timeline 1850 1930 to 1960 map