Attacks by Germanic tribes.
Are you talking about cause and demand?
Answer:
3- population distribution
Explanation:
population is the total amount of people in an area, and if it's spread out, it would be distribution.
add the definitions up, and it's population distribution! :D
Answer:
may be for better development
Explanation:
if the country is divided into provinces then there will be competition among provinces and then there can be rapid development in a country