Ok World war two Started in 1939 and ended in 1945 6 year 1 day
It started over when World War Two in Europe began on 3rd September 1939, when the Prime Minister of Britain, Neville Chamberlain, declared war on Germany. It involved many of the world's countries. The Second World War was started by Germany in an unprovoked attack on Poland.
We fought for a while and it ended we we bombed Hiroshima and Nagasaki then we had a peace treaty.