More likely, the answers provided are not from an original answer sheet, but were researched by someone more recently. (Note that they are not scanned in from

More likely, the answers provided are not from an original answer sheet, but were researched by someone more recently. (Note that they are not scanned in from an original document like the questions.) Bismarck was already a world-historical personage by 1869, and anybody applying to MIT would have likely been able to identify him.