How did Marty's dad discover Shiloh?

How does the mother defend her child to the old duck

What task did the surveyors do? a. they studied the landscape to determine the most direct route for building a road. b. they designed treadmills that lifted blocks of stone to where they were needed. c. they dug trenches and filled them with sand, concrete, and large blocks to form a road.

What was noras point of view on what her parents were doing in keeping freedom in the family?