In the novel Things Fall Apart by Chinua Achebe, Okonkwo is a leader of Umuofia (a fictional Nigerian clan) and takes pride in his culture’s traditions. However, when the arrival of European missionaries brings changes to Umuofia, the novel asks a central question: How ______blank

The element carbon has the highest melting point ______blank all the elements on the periodic table—3,500 degrees Celsius.

Emperor Ashoka ruled the Maurya Empire in South Asia from roughly 270 to 232 BCE. He is known for enforcing a moral code called the Law of Piety, which established the sanctity of animal ______blank the just treatment of the elderly, and the abolition of the slave trade.

Fans of science fiction will ______blank multiple references to classic sci-fi stories in Janelle Monáe’s song lyrics, including her recurring nods to the plot of the 1927 sci-fi film Metropolis.

By analyzing ice cores from Greenland and Antarctica, a research team at Sweden’s Lund University discovered evidence of a solar storm that occurred 9,200 years ago. Scientists had previously thought the Sun to be in a relatively “quiet” phase at that ______blank the Lund team’s finding suggests otherwise.

About 70,000 meteorites have been found on Earth. Although most meteorites are fragments of ______blank hundred have been identified as being from the Moon or Mars.

After the printing press was introduced in 1440, handwritten manuscripts from Europe’s medieval period were often destroyed and the paper used for other purposes. In one instance, pages ______blank a collection of Norse tales dating to 1270 were discovered lining a bishop’s miter (hat).