Answer:
advances in tool making technology led to advance in agriculture and farming revolutionized the world and set prehistoric humans on a course toward modernity inventions such as the plow helped in planting of seeds. no longer did human have to depend on the luck of the hunt.
What to do with the Native Americans?
From what I can see there are multiple correct answers. B and C are both correct. If you can only pick one I'd go with C. More recently businesses have moved more into cities.
