Explain why population settlements changed over time ?

Over time people move to other places depending on their opportunities.

Explanation: If someone wanted to be a farmer they would settle down in a more fertile area where they can get more land. and someone who wants to be a lawyer or doctor would settle in a more busy area in the city.

chinese civil war took place over a long period of time between 1927 and 1950. the war was interrupted when japan invaded china in 1936 and by world war ii. the war was fought between the nationalist government of china, also called the kuomintang (kmt), and the communist party of china (cpc).