First, they are themselves scholars of history. Second, they expect you to engage in the practice of history. In other words, they frequently want you to use information to make an educated guess about some bygone event, era, or phenomenon. You probably know how to guess about the past.
End Of Slavery Or Civil War
Answer:
1. by digging snow tunnels from their shelters to the tunnel
2. by relying on lamps to light the tunnels where they lived and worked
Explanation: