When you read books from other countries, you might often have difficulties understanding them, as they might include references to other cultures which you don't understand and still need to learn. So reading this would likely be more difficult than reading literature from your own countries
Death of a Salesman is an incredibly complex drama, and it's value is more in the context and subtext than the story itself.
Answer: knot, kph, Mach, miles, mph, rev, rpm