Ice and snow covered most of the northern part of the world. The people made fires to keep warm and to cook, they hunted and gathered food, and used stone tools to mine, chop, and dig. They lived in caves to get out of the weather elements
Answer:
Because when you are independent you get to abide by your own rules and you aren't governed by someone else.
The use of non-renewable resources such as coal which was cheaper, which was used to mine iron
