Problem: New York City:

New York's non-white population was 36,620 in 1890. New York City was a prime destination in the early twentieth century for African Americans during the Great Migration from the American South, and by 1916, New York City was home to the largest urban African diaspora in North America. The Harlem Renaissance of literary and cultural life flourished during the era of Prohibition. The larger economic boom generated construction of skyscrapers competing in height and creating an identifiable skyline.

What was the name of the Prohibition-era African-American cultural flourishing in New York?
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A: Harlem Renaissance


Problem: Pharmaceutical industry:

In 1903 Hermann Emil Fischer and Joseph von Mering disclosed their discovery that diethylbarbituric acid, formed from the reaction of diethylmalonic acid, phosphorus oxychloride and urea, induces sleep in dogs. The discovery was patented and licensed to Bayer pharmaceuticals, which marketed the compound under the trade name Veronal as a sleep aid beginning in 1904. Systematic investigations of the effect of structural changes on potency and duration of action led to the discovery of phenobarbital at Bayer in 1911 and the discovery of its potent anti-epileptic activity in 1912. Phenobarbital was among the most widely used drugs for the treatment of epilepsy through the 1970s, and as of 2014, remains on the World Health Organizations list of essential medications. The 1950s and 1960s saw increased awareness of the addictive properties and abuse potential of barbiturates and amphetamines and led to increasing restrictions on their use and growing government oversight of prescribers. Today, amphetamine is largely restricted to use in the treatment of attention deficit disorder and phenobarbital in the treatment of epilepsy.

What acid was marketed in 1904?
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A: unanswerable


Problem: Airport:

At all airports the use of a traffic pattern (often called a traffic circuit outside the U.S.) is possible. They may help to assure smooth traffic flow between departing and arriving aircraft. There is no technical need within modern aviation for performing this pattern, provided there is no queue. And due to the so-called SLOT-times, the overall traffic planning tend to assure landing queues are avoided. If for instance an aircraft approaches runway 17 (which has a heading of approx. 170 degrees) from the north (coming from 360/0 degrees heading towards 180 degrees), the aircraft will land as fast as possible by just turning 10 degrees and follow the glidepath, without orbit the runway for visual reasons, whenever this is possible. For smaller piston engined airplanes at smaller airfields without ILS equipment, things are very differently though.

What is it like for aircraft landing at small airfields as fast as possible while following the glidepath?
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A: unanswerable


Problem: History of India:

However, the army was hopeless in battle against the western forces, particularly against the young Mahmud of Ghazni. In the year 1001, soon after Sultan Mahmud came to power and was occupied with the Qarakhanids north of the Hindu Kush, Jaipal attacked Ghazni once more and upon suffering yet another defeat by the powerful Ghaznavid forces, near present-day Peshawar. After the Battle of Peshawar, he committed suicide because his subjects thought he had brought disaster and disgrace to the Shahi dynasty.

In what year was Jaipal again soundly defeated by the Muslims?
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A:
1001