Conversation so far:
when was the second world war took place
World War 2 happened 1 September 1939 – 2 September 1945.
how long was ww2
World War 2 was 6 years and 1 day.
who won ww2
WWII was an Allied Victory.

Question: did many people die in the war
Self-contained rewrite: did many people died in ww2