Article: Important geological concepts were established as naturalists began studying the rock formations of the Alps in the 18th century. In the mid-19th century the now defunct theory of geosynclines was used to explain the presence of "folded" mountain chains but by the mid-20th century the theory of plate tectonics became widely accepted.

Question: When did the studying of rock formations begin in the Alps?
Ans: the 18th century

Here is a question about this article: The element was probably named by the alchemist Paracelsus after the German word Zinke (prong, tooth). German chemist Andreas Sigismund Marggraf is credited with discovering pure metallic zinc in 1746. Work by Luigi Galvani and Alessandro Volta uncovered the electrochemical properties of zinc by 1800. Corrosion-resistant zinc plating of iron (hot-dip galvanizing) is the major application for zinc. Other applications are in batteries, small non-structural castings, and alloys, such as brass. A variety of zinc compounds are commonly used, such as zinc carbonate and zinc gluconate (as dietary supplements), zinc chloride (in deodorants), zinc pyrithione (anti-dandruff shampoos), zinc sulfide (in luminescent paints), and zinc methyl or zinc diethyl in the organic laboratory.
What is the answer to this question: What is the most common use for zinc?
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So... (hot-dip galvanizing

The problem: Answer a question about this article:
Lower Manhattan is the third-largest central business district in the United States and is home to the New York Stock Exchange, on Wall Street, and the NASDAQ, at 165 Broadway, representing the world's largest and second largest stock exchanges, respectively, when measured both by overall average daily trading volume and by total market capitalization of their listed companies in 2013. Investment banking fees on Wall Street totaled approximately $40 billion in 2012, while in 2013, senior New York City bank officers who manage risk and compliance functions earned as much as $324,000 annually. In fiscal year 201314, Wall Street's securities industry generated 19% of New York State's tax revenue. New York City remains the largest global center for trading in public equity and debt capital markets, driven in part by the size and financial development of the U.S. economy.:3132 In July 2013, NYSE Euronext, the operator of the New York Stock Exchange, took over the administration of the London interbank offered rate from the British Bankers Association. New York also leads in hedge fund management; private equity; and the monetary volume of mergers and acquisitions. Several investment banks and investment mangers headquartered in Manhattan are important participants in other global financial centers.:3435 New York is also the principal commercial banking center of the United States.
The NASDAQ is located on what street in NYC?
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The answer: 165 Broadway

Problem: Please answer a question about the following article about Armenia:
Turkey also has a long history of poor relations with Armenia over its refusal to acknowledge the Armenian Genocide. Turkey was one of the first countries to recognize the Republic of Armenia (the 3rd republic) after its independence from the USSR in 1991. Despite this, for most of the 20th century and early 21st century, relations remain tense and there are no formal diplomatic relations between the two countries due to Turkey's refusal to establish them for numerous reasons. During the Nagorno-Karabakh War and citing it as the reason, Turkey illegally closed its land border with Armenia in 1993. It has not lifted its blockade despite pressure from the powerful Turkish business lobby interested in Armenian markets.
When did Armenia gain independence from the USSR?
A: 1991

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Trading companies became active in Tuvalu in the mid-19th century; the trading companies engaged palagi traders who lived on the islands. John (also known as Jack) O'Brien was the first European to settle in Tuvalu, he became a trader on Funafuti in the 1850s. He married Salai, the daughter of the paramount chief of Funafuti. Louis Becke, who later found success as a writer, was a trader on Nanumanga from April 1880 until the trading-station was destroyed later that year in a cyclone. He then became a trader on Nukufetau.

In what century did trading companies arrive in Tuvalu?
Answer: mid-19th

The India Gate built in 1931 was inspired by the Arc de Triomphe in Paris. It is the national monument of India commemorating the 90,000 soldiers of the Indian Army who lost their lives while fighting for the British Raj in World War I and the Third Anglo-Afghan War.
What year was the India Gate built?
1931