Question

How long did the second World war last​

Answer 1

Answer:

World War II, also called Second World War, conflict that involved virtually every part of the world during the years 1939–45.

Answer 2

Explanation:

World War II or the Second World War, often abbreviated as WWII or WW2, was a global war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers.