The terrain is one thing they study, for example, if it is woody, or a plain, or rocky, or if it has mountains, etc.
they also study the plants, animals, etc and how they survive in the conditions
hope this helps
It would be more helpful to have a map, but based on the information I would say 1810. The text itself states that is when it was most populated.
He was responsible for the raid on Harpers Ferry in 1859. John Brown was a radical abolitionist who believed in the violent overthrow of the slavery system. During the Bleeding Kansas conflicts, Brown and his sons led attacks on pro-slavery residents.
Hope this helps and good luck. :)
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