Final answer:
In the book "Maus," the smugglers called Jan Karski to share his eyewitness accounts and provide evidence of the crimes committed by the Nazis.
Step-by-step explanation:
In the book "Maus," the smugglers called a person named Jan Karski. Jan Karski was a Polish resistance fighter who was smuggled into the Warsaw ghetto and a transit camp to witness the treatment of Jews by the Nazis during World War II.
He saw the atrocities and reported them to world leaders, including U.S. Supreme Court Justice Felix Frankfurter. The smugglers called Jan Karski because they wanted him to share his eyewitness accounts and provide evidence of the crimes committed by the Nazis.