The north made advancements in commercialization and manufacturing on a mass scale. also they had many knew machines that allowed people to farm twice as fast as someone could by hand.
If i had multiple choice i could completely answer your question..
Answer:
D. The Himalayan Mountains
Explanation:
(I'm not sure what time frame you mean) but at one point people were afraid to explore the world because they thought the world was flat as opposed to round and feared falling off the face of the Earth.
Answer:
the Troposphere because it is the lowest layer
