Question: By 3400 BCE, the Sahara was as dry as it is today, due to reduced precipitation and higher temperatures resulting from a shift in the Earth's orbit. As a result of this aridification, it became a largely impenetrable barrier to humans, with the remaining settlements mainly being concentrated around the numerous oases that dot the landscape. Little trade or commerce is known to have passed through the interior in subsequent periods, the only major exception being the Nile Valley. The Nile, however, was impassable at several cataracts, making trade and contact by boat difficult.
Is there an answer to this question: By What time period was the Sahara dry like it is today?

Answer: 3400 BCE


Question: They maintained that the potassium tartrate used in his treatment prevented his stomach from expelling these compounds and that his thirst was a symptom of the poison. Their hypothesis was that the calomel given to Napoleon became an overdose, which killed him and left extensive tissue damage behind. According to a 2007 article, the type of arsenic found in Napoleon's hair shafts was mineral, the most toxic, and according to toxicologist Patrick Kintz, this supported the conclusion that he was murdered.
Is there an answer to this question: In what year was the article describing the type of arsenic found in Napoleon's hair published?

Answer: 2007


Question: The first notable, and historically important, book credited to a Bermudian was The History of Mary Prince, a slave narrative by Mary Prince. It is thought to have contributed to the abolition of slavery in the British Empire. Ernest Graham Ingham, an expatriate author, published his books at the turn of the 19th and 20th centuries. In the 20th century, numerous books were written and published locally, though few were directed at a wider market than Bermuda. (The latter consisted primarily of scholarly works rather than creative writing). The novelist Brian Burland (1931– 2010) achieved a degree of success and acclaim internationally. More recently, Angela Barry has won critical recognition for her published fiction.
Is there an answer to this question: Who wrote The History of Prince Mary?

Answer: unanswerable


Question: African Americans made up 41 percent of death row inmates while making up only 12.6 percent of the general population. (They have made up 34 percent of those actually executed since 1976.) However, that number is lower than that of prison inmates, which is 47 percent. According to the US Department of Justice, African Americans accounted for 52.5% of homicide offenders from 1980 to 2008, with whites 45.3% and Native Americans and Asians 2.2%. This means African Americans are less likely to be executed on a per capita basis. However, according to a 2003 Amnesty International report, blacks and whites were the victims of murder in almost equal numbers, yet 80 percent of the people executed since 1977 were convicted of murders involving white victims. 13.5% of death row inmates are of Hispanic or Latino descent, while they make up 17.4% of the general population.
Is there an answer to this question: What percentage of the American population is Hispanic?

Answer:
17.4%