Because if theres alot of trees there not alot of room for crops but if you slash and burn your eliminating the trees and putting more nutrients into the soil for crop growth
I think is it the letter D. Because everything I have read said oil
Free Trade is the correct answer because foreign goods is an international trade
A major reason why farm workers and their families moved to the cities in the 1800s is because the US was undergoing a period of industrialization, and many more jobs were opening up in factories as opposed to farms.
