In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

Archaeologists say they have unearthed the oldest human footprints ever found in North America. The impressions were discovered buried at a shoreline at an archaeological dig site on Calvert Island, British Columbia in Canada. Charcoal in the prints has been radiocarbon dated, giving them an age of 13,200 years old. The finding was made by the Hakai Institute and the University of Victoria, both in British Columbia. Archaeologists Dr Daryl Fedje and Dr Duncan McLaren excavated an area below the high tide line, and found dozens of human footprints that had remained intact in clay. An ancient skeleton found nearly 20 years ago in a river in Washington is related to Native Americans, says a DNA study that could help resolve a long-running dispute over its ancestry.Human footprints were found preserved on Calvert Island in CanadaThey were radiocarbon dated to a remarkable 13,200 years oldIf confirmed they would be the oldest human footprints in North AmericaDiscovery also suggests people once migrated down the coast 
 Question:'There's no way to get to _ other than watercraft, and that applies to 13,000 years ago as it does today,' Dr McLaren said.
Calvert Island

Washington (CNN) North Korea might not be able to reach the U.S. mainland with a nuclear weapon yet, but the political fallout from its claimed hydrogen bomb test is here already. Even before the shockwaves of the 5.1 temblor triggered by Tuesday's test wore off, Hillary Clinton was fighting off a volley of Republican attacks, GOP presidential candidates were talking tough and Donald Trump jumped on a chance to chastise China. The episode was a fresh indication of the challenge that Clinton faces in running for the White House on her record as secretary of state, which makes it impossible for her to escape deficiencies in President Barack Obama's national security legacy.The episode is a fresh indication of the challenge that Clinton faces in running for the White House on her record as secretary of stateWashington has tried punishment and inducements repeatedly with North Korea and has failed to change its calculations 
 Question:He then toughened his stance by including _ in his "axis of evil."
North Korea

By opting to join Celtic, Scott Allan has dashed the hope of his oldest friend in football. Andy Halliday’s vision of them being brothers in light blue will go unfulfilled. Despite that disappointment, Allan revealed that best wishes were forthcoming after he broke the news to Halliday. From talk of being Rangers team-mates, there is now a desire to one day go head-to-head in an Old Firm encounter. The two midfielders grew up in the same area on the southside of Glasgow, not far from Ibrox, and attended both the same nursery and primary school. Halliday joined his boyhood heroes this summer after impressing on trial. Speaking earlier this month, he spoke of a dear wish that Allan would follow, despite Hibs’ steadfast refusal to sell to their Championship rivals.Midfielder Scott Allan was unveiled as a Celtic player on Monday afternoonOld friend Andy Halliday was hoping Allan would make move to RangersBoth players attended the same nursery and primary school in GlasgowBut Allan left Halliday's dreams in tatters by agreeing move to Celtic 
 Question:What _ hadn’t foreseen was a move to the other side of Glasgow’s footballing divide.

Andy Halliday

