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  2. 1 day ago · World War I, an international conflict that in 1914–18 embroiled most of the nations of Europe along with Russia, the United States, the Middle East, and other regions. The war pitted the Central Powers —mainly Germany, Austria-Hungary, and Turkey —against the Allies—mainly France, Great Britain, Russia, Italy, Japan, and, from 1917 ...

  3. 3 days ago · history of technology, the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both fine and applied. When it first appeared in English in the 17th century, it was used to ...

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  5. 3 days ago · Summarize This Article. Cold War, the open yet restricted rivalry that developed after World War II between the United States and the Soviet Union and their respective allies. The Cold War was waged on political, economic, and propaganda fronts and had only limited recourse to weapons. The term was first used by the English writer George Orwell ...

    • The Editors of Encyclopaedia Britannica
    • What year did the 20th century begin?1
    • What year did the 20th century begin?2
    • What year did the 20th century begin?3
    • What year did the 20th century begin?4
    • What year did the 20th century begin?5
  6. 3 days ago · Radiotelegraphy began to be used commercially in the early 20th century. Telex became an operational teleprinter service in the 1930s. Such systems were limited to point-to-point communication between two end devices. Information theory

  7. 5 days ago · The rapid expansion of education past age 14 set the U.S. apart from Europe for much of the 20th century. [82] From 1910 to 1940, high schools grew in number and size, reaching out to a broader clientele. In 1910, for example, 9% of Americans had a high school diploma; in 1935, the rate was 40%. [190]

  8. 5 days ago · The 20th century saw an explosion in plastic production and integration into everyday life, fueled by fossil fuels, but also raised concerns about waste accumulation and environmental impacts. Recent advances in bioplastics and the three types of recycling technologies offer hope for a more sustainable future. The Birth of Synthetic Plastics

  9. 2 days ago · During the 1983–2005 Second Sudanese Civil War, people were taken into slavery. [12] Evidence emerged in the late 1990s of systematic child slavery and trafficking on cacao plantations in West Africa. [13] Slavery in the 21st century continues and generates an estimated $150 billion in annual profits. [14]

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