I'm NOT 100% sure about this answer but I think it's the Lines of Longitude
The answer is steamboats! The first steamboat came year 1807 and was invented by John Fitch:)
Answer:
Because each mountain has its own way of being formed so its expected that each mountain would differ from the other
They were seeking greater economic opportunity, while some, such as the pilgrims in 1600s looking for freedom.
