One of the main ways in which economic opportunity divided urban and rural dwellers is that those who could afford to live in the suburbs usually chose to do so, while low-income people who had to work lesser-paying jobs were usually confined to the cities.
Answer:
World War I changed the way wars were fought because of the widely known trench warfare. Because troops inside the trenches were much more protected than troops outside, it led to much more prolonged battles.
I believe the answer is: oil and electricity
Answer:
to gain a connection to the markets of China
Explanation:
A) gunpowder was the invention
