In what year, was Canada's population observed to reach its highest ever?

1956-1957

Explanation:

The baby boom started after the end of the second world war

Edit: so sorry wrong answer

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).