Uhh please help with the middle one :)

2. what was the dred scott decision about? what do we learn from this supreme court case?

Which of the following accurately describes the workforces of the united states and canada? a. most of the workforce in the united states and canada is employed in the service industry. b. most of the workforce in the united states and canada is employed in the educational field. c. most of the workforce in the united states and canada is employed in manufacturing and mining. d. most of the workforce in the united states and canada is employed in agriculture.

What is the approximate distance between paris and moscow?