The problem: Answer a question about this article:
The Xiongnu, a nomadic steppe confederation, defeated the Han in 200 BC and forced the Han to submit as a de facto inferior partner, but continued their raids on the Han borders. Emperor Wu of Han (r. 14187 BC) launched several military campaigns against them. The ultimate Han victory in these wars eventually forced the Xiongnu to accept vassal status as Han tributaries. These campaigns expanded Han sovereignty into the Tarim Basin of Central Asia, divided the Xiongnu into two separate confederations, and helped establish the vast trade network known as the Silk Road, which reached as far as the Mediterranean world. The territories north of Han's borders were quickly overrun by the nomadic Xianbei confederation. Emperor Wu also launched successful military expeditions in the south, annexing Nanyue in 111 BC and Dian in 109 BC, and in the Korean Peninsula where the Xuantu and Lelang Commanderies were established in 108 BC.
In what year did Emperor Wu of Han's reign end?
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The answer: 87 BC

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In 1526, Babur, a Timurid descendant of Timur and Genghis Khan from Fergana Valley (modern day Uzbekistan), swept across the Khyber Pass and established the Mughal Empire, which at its zenith covered modern day Afghanistan, Pakistan, India and Bangladesh. However, his son Humayun was defeated by the Afghan warrior Sher Shah Suri in the year 1540, and Humayun was forced to retreat to Kabul. After Sher Shah's death, his son Islam Shah Suri and the Hindu emperor Hemu Vikramaditya, who had won 22 battles against Afghan rebels and forces of Akbar, from Punjab to Bengal and had established a secular rule in North India from Delhi till 1556 after winning Battle of Delhi. Akbar's forces defeated and killed Hemu in the Second Battle of Panipat on 6 November 1556.
What empire did Babur found in northern India?
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The answer: Mughal Empire

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Tourism is a vital industry for New York City, which has witnessed a growing combined volume of international and domestic tourists receiving approximately 51 million tourists in 2011, 54 million in 2013, and a record 56.4 million in 2014. Tourism generated an all-time high US$61.3 billion in overall economic impact for New York City in 2014.
How much money did tourism create for New York in 2014?
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The answer: US$61.3 billion

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The colloquialism "buck"(s) (much like the British word "quid"(s, pl) for the pound sterling) is often used to refer to dollars of various nations, including the U.S. dollar. This term, dating to the 18th century, may have originated with the colonial leather trade. It may also have originated from a poker term. "Greenback" is another nickname originally applied specifically to the 19th century Demand Note dollars created by Abraham Lincoln to finance the costs of the Civil War for the North. The original note was printed in black and green on the back side. It is still used to refer to the U.S. dollar (but not to the dollars of other countries). Other well-known names of the dollar as a whole in denominations include "greenmail", "green" and "dead presidents" (the last because deceased presidents are pictured on most bills).
What kind of trade may have been the origin of the "buck"?
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The answer:
colonial leather trade