01·The "Great Emu War" of 1932 saw soldiers with machine guns deployed against emus in which country?
02·What element was first discovered in the sun's spectrum in 1868 before it was found on Earth?
03·The ancient city of Timbuktu, a historical center of Islamic scholarship, is located in which modern-day West African country?
04·The influential 1922 German Expressionist film *Nosferatu* was an unauthorized adaptation of which author's novel?
05·What was the primary commodity sought by the Dutch West India Company in the Hudson River valley during the 17th century?
06·The Chandrasekhar Limit defines the maximum mass of a stable white dwarf star. What is this approximate mass limit relative to the sun?
07·The constructed language Esperanto was created in 1887 by a physician from which modern-day country?
08·During the Kamakura period in Japan, what was the title of the military dictator who held the real power?
09·The Haber-Bosch process, developed in the early 20th century, revolutionized the production of what crucial chemical compound?
10·Who was the female mathematician whose work on theoretical physics predicted the existence of the Higgs boson decades before its discovery?
11·The world's largest known cave by volume, Hang Sơn Đoòng, was first fully explored in 2009 and is located in which Southeast Asian country?
12·The architectural style known as Brutalism derives its name from the French term "béton brut," which translates to what?
13·The 1815 eruption of which volcano caused the "Year Without a Summer" in the Northern Hemisphere?
14·In particle physics, which of the four fundamental forces is mediated by the gluon?
15·The process of nixtamalization, crucial for making masa for tortillas, involves soaking maize in an alkaline solution, traditionally what substance?
16·What is the name of the deep-sea trench that marks the subduction zone of the Pacific Plate under the Philippine Plate?
17·The short-lived, unrecognized Republic of Ezo was established in 1869 on which modern-day Japanese island?
18·What is the term for a species that is native to a single, defined geographic location and found nowhere else?
19·The literary concept of the "unreliable narrator" was a technique famously employed by which Japanese author in his 1922 short story "In a Grove"?
20·The "Great Vowel Shift" was a major series of changes in pronunciation that affected which language between the 14th and 18th centuries?
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