Problem: Improved aircraft designs were in the offing with the Bristol Beaufighter, then under development. It would prove formidable, but its development was slow. The Beaufighter had a maximum speed of 320 mph (510 km/h), an operational ceiling of 26,000 ft (7,900 m) and a climb rate of 2,500 ft (760 m) per minute. Its armament of four 20 mm (0.79 in) Hispano cannon and six .303 in Browning machine guns offered a serious threat to German bombers. On 19 November, John Cunningham of No. 604 Squadron RAF shot down a bomber flying an AI-equipped Beaufighter. It was the first air victory for the airborne radar.
What day was the first victory the RAF had with airborne radar?
The answer is the following: 19 November

Problem: At Maecenas' insistence (according to the tradition) Virgil spent the ensuing years (perhaps 3729 BC) on the long didactic hexameter poem called the Georgics (from Greek, "On Working the Earth") which he dedicated to Maecenas. The ostensible theme of the Georgics is instruction in the methods of running a farm. In handling this theme, Virgil follows in the didactic ("how to") tradition of the Greek poet Hesiod's Works and Days and several works of the later Hellenistic poets. The four books of the Georgics focus respectively on raising crops and trees (1 and 2), livestock and horses (3), and beekeeping and the qualities of bees (4). Well-known passages include the beloved Laus Italiae of Book 2, the prologue description of the temple in Book 3, and the description of the plague at the end of Book 3. Book 4 concludes with a long mythological narrative, in the form of an epyllion which describes vividly the discovery of beekeeping by Aristaeus and the story of Orpheus' journey to the underworld. Ancient scholars, such as Servius, conjectured that the Aristaeus episode replaced, at the emperor's request, a long section in praise of Virgil's friend, the poet Gallus, who was disgraced by Augustus, and who committed suicide in 26 BC.
Which long didactic hexameter poem did Virgil work on for several years?
The answer is the following: Georgics

Problem: Some Europeans living among Indigenous Americans were called "white Indians". They "lived in native communities for years, learned native languages fluently, attended native councils, and often fought alongside their native companions." More numerous and typical were traders and trappers, who married Indigenous American women from tribes on the frontier and had families with them. Some traders, who kept bases in the cities, had what ware called "country wives" among Indigenous Americans, with legal European-American wives and children at home in the city. Not all abandoned their "natural" mixed-race children. Some arranged for sons to be sent to European-American schools for their education.
Why were some multiracial children sent to Europe?
The answer is the following: for their education

Problem: Natural uranium consists of three major isotopes: uranium-238 (99.28% natural abundance), uranium-235 (0.71%), and uranium-234 (0.0054%). All three are radioactive, emitting alpha particles, with the exception that all three of these isotopes have small probabilities of undergoing spontaneous fission, rather than alpha emission. There are also five other trace isotopes: uranium-239, which is formed when 238U undergoes spontaneous fission, releasing neutrons that are captured by another 238U atom; uranium-237, which is formed when 238U captures a neutron but emits two more, which then decays to neptunium-237; uranium-233, which is formed in the decay chain of that neptunium-237; and finally, uranium-236 and -240, which appear in the decay chain of primordial plutonium-244. It is also expected that thorium-232 should be able to undergo double beta decay, which would produce uranium-232, but this has not yet been observed experimentally.
What isotope of uranium is formed when 238U experiences spontaneous fission?
The answer is the following:
uranium-239